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Child health Kidney disease and urology

Bedwetting (enuresis)

Last revised in November 2024

Bedwetting is involuntary wetting during sleep, without any inherent suggestion of frequency or pathophysiology.

Bedwetting (enuresis): Summary

  • Bedwetting is involuntary wetting during sleep. 
  • Bedwetting can be classified as:
    • Primary bedwetting without daytime symptoms — the child or young person has never achieved sustained continence at night and does not have daytime symptoms. This is thought to be caused by sleep arousal difficulties, polyuria, and/or bladder dysfunction.
    • Primary bedwetting with daytime symptoms — the child or young person has never achieved sustained continence at night and has daytime symptoms, such as wetting, urinary frequency, or urgency. This may be caused by an overactive bladder, congenital malformations, neurological disorders, urinary tract infection (UTI), or chronic constipation.
    • Secondary bedwetting — bedwetting occurs after the child or young person has been previously dry at night for more than 6 months. This is usually due to an underlying cause, such as diabetes, UTI, constipation, psychological problems (for example behavioural or emotional problems), or family problems (vulnerable child or family).
  • Risk factors associated with bedwetting include:
    • A family history of bedwetting.
    • Male sex (there is a 2:1 male-to-female ratio).
    • Delay in attaining bladder control.
    • Obesity.
    • Psychological or behavioural disorders, such as attention deficit hyperactivity disorder (ADHD); autism spectrum disorder; and anxiety, depressive, and conduct disorders.
  • When assessing a child or young person with bedwetting, it is necessary to determine the type of bedwetting by asking if:
    • There are any daytime symptoms.
    • The child has previously been dry at night without assistance for 6 months.
  • Managing primary bedwetting without daytime symptoms involves:
    • Giving appropriate advice, including general advice on bedwetting, and advice on lifting and waking, fluid intake, diet, toileting patterns, and positive reward systems.
    • In children younger than 5 years of age, offering reassurance that many children of that age wet the bed and that this usually resolves without treatment. 
    • In those aged 5 years of age and older, if bedwetting is infrequent (less than twice a week), giving reassurance that bedwetting may resolve without treatment and offering the option of a wait-and-see approach. If treatment is required, options include an enuresis alarm in combination with positive reward systems (first-line treatment) and treatment with desmopressin.
    • Arranging specialist review for children and young people whose bedwetting has not responded to courses of initial treatments.
  • Managing primary bedwetting with daytime symptoms involves:
    • Referring the child or young person to secondary care or an enuresis clinic for further investigations and assessment.
    • Considering further assessment and investigation to exclude a specific medical problem for children over 2 years who, despite awareness of toileting needs and showing appropriate toileting behaviour, are struggling to not wet themselves during the day as well as the night.
  • Managing secondary bedwetting involves managing the underlying cause in primary care where possible, or arranging referral to a paediatrician or an enuresis clinic if an underlying cause cannot be managed in primary care or is not clearly identified.

Have I got the right topic?

From age 24 months to 19 years.

This CKS topic covers the assessment and management of bedwetting in children and young people aged under 19 years. 

This CKS topic does not cover the management of adult bedwetting. It also does not cover toilet training or the management of constipation, urinary tract infections, or diabetes.

There are separate CKS topics on Constipation in children, Diabetes - type 1, Diabetes - type 2, and Urinary tract infection - children.

The target audience for this CKS topic is healthcare professionals working within the NHS in the UK, and providing first contact or primary healthcare.

How up-to-date is this topic?

Changes

November 2024 — reviewed. A literature search was conducted in November 2024 to identify evidence-based guidelines, UK policy, systematic reviews, and key randomized controlled trials published since the last revision of this topic. No major changes to the recommendations have been made.

Previous changes

March 2023 — minor update. Added information about the option to prescribe Demovo® for the treatment of primary enuresis in children over the age of 5. 

March 2020 — reviewed. A literature search was conducted in February 2020 to identify evidence-based guidelines, UK policy, systematic reviews, and key randomized controlled trials published since the last revision of the topic. No major changes to clinical recommendations have been made, but the topic has been restructured.

January 2017 — minor update. To reflect name change of ERIC, The Children's Bowel & Bladder Charity.

September to October 2014 — reviewed. A literature search was conducted in September 2014 to identify evidence-based guidelines, UK policy, systematic reviews, and key randomized controlled trials published since the last revision of this topic. No major changes to the recommendations have been made. A prescribing information section on desmopressin has been added to this topic.

June 2011 — minor update. Removed the black triangle status from desmopressin prescriptions because desmopressin is no longer a black triangle drug. 

October to December 2010 — topic updated. The evidence base has been reviewed in detail, and recommendations are more clearly justified and transparently linked to the supporting evidence.

January 2010 — minor correction to contact details for ERIC. 

January to August 2009 — converted from CKS guidance to CKS topic structure. The evidence base has been reviewed in detail, and recommendations are more clearly justified and transparently linked to the supporting evidence.

July 2007 — updated to remove text and prescriptions for nasal desmopressin. The Medicines and Healthcare Products Regulatory Agency (MHRA) have removed the enuresis indication for desmopressin nasal preparations because of safety concerns.

November 2005 — minor technical update. 

March 2005 — reviewed. Validated in June 2005 and issued in July 2005.

September 2001 — reviewed. Validated in November 2001 and issued in April 2002.

February 1999 — written. Validated April 1999 and issued in May 1999.

Update

New evidence

Evidence-based guidelines

No new evidence-based guidelines since 1 November 2024.

HTAs (Health Technology Assessments)

No new HTAs since 1 November 2024.

Economic appraisals

No new economic appraisals relevant to England since 1 November 2024.

Systematic reviews and meta-analyses

No new systematic reviews and meta-analyses since 1 November 2024.

Primary evidence

No new primary evidence which reaches the CKS threshold for inclusion published since 1 November 2024.

New policies

No new national policies or guidelines since 1 November 2024.

New safety alerts

No new safety alerts since 1 November 2024.

Changes in product availability

No changes in product availability since 1 November 2024.

Goals and outcome measures

Goals

To support primary healthcare professionals to:

  • Determine the type of bedwetting experienced by the child or young person (primary bedwetting with daytime symptoms, primary bedwetting without daytime symptoms, or secondary bedwetting).
  • Manage children and young people with primary bedwetting without daytime symptoms in primary care where possible, and refer for specialist review when bedwetting has not responded to courses of initial treatments.
  • Refer children and young people with primary bedwetting and daytime symptoms to secondary care or an enuresis clinic (if available) for further investigations and assessment.
  • Manage the underlying cause of secondary bedwetting in primary care where possible, or arrange referral to a paediatrician or enuresis clinic, if an underlying cause cannot be managed in primary care, or is not clearly identified.
  • Provide appropriate information and advice to parents, carers, and young people (where appropriate) about bedwetting.

Outcome measures

No outcome measures were found during the review of this topic.

Audit criteria

No audit criteria were found during the review of this topic.

QOF indicators

No QOF indicators were found during the review of this topic.

QIPP - Options for local implementation

No QIPP indicators were found during the review of this topic.

NICE quality standards

Bedwetting in children and young people

  • Children and young people who are bedwetting have a comprehensive initial assessment.
  • Children and young people have an agreed review date if they, or their parents or carers, are given advice about changing their daily routine to help with bedwetting.
  • Children and young people, and their parents or carers if appropriate, have a discussion about initial treatment if bedwetting has not improved after changing their daily routine.
  • Children and young people who are bedwetting receive the treatment agreed in their initial treatment plan.
  • Children and young people whose bedwetting has not responded to courses of initial treatments are referred for specialist review.

[NICE, 2020]

Background information

What is it?

  • Bedwetting (nocturnal enuresis) is involuntary wetting during sleep. It is generally considered to be normal in children younger than 5 years of age [NICE, 2010].
  • The DSM-5 diagnostic criteria for bedwetting include that it [APA, 2022]:
    • Occurs at least twice weekly for 3 consecutive months, or
    • Causes clinically significant distress, or
    • Leads to impaired social, academic, or other important areas of functioning.
  • Bedwetting can be classified as [NICE, 2010; EAU, 2024]:
    • Primary bedwetting without daytime symptoms — the child or young person has never achieved sustained continence at night and does not have daytime symptoms. 
    • Primary bedwetting with daytime symptoms — the child or young person has never achieved sustained continence at night and has daytime symptoms, such as urgency, frequency, daytime wetting, abdominal straining or poor urinary stream, pain passing urine, or passing urine fewer than four times a day. 
    • Secondary bedwetting — bedwetting occurs after the child or young person has been previously dry at night for more than 6 months. 

What causes it?

  • Primary bedwetting without daytime symptoms is thought to be caused by one or more of the following:
    • Sleep arousal difficulties — inability to wake to noise, the sensation of a full bladder, or bladder contractions.
      • A meta-analysis of nine studies with 1685 participants found that children with enuresis had more sleep problems than controls, especially parasomnias, breathing disorders, and daytime sleepiness [Fernandes, 2023].
    • Polyuria — a larger than normal production of urine at night that typically exceeds the nocturnal bladder capacity.
    • Bladder dysfunction — an overactive bladder or small bladder capacity.
  • Primary bedwetting with daytime symptoms may be caused by:
    • An overactive bladder.
    • Structural abnormalities (for example ectopic ureter).
    • Neurological disorders (for example neurogenic bladder secondary to spinal dysraphism).
    • Urinary tract infection (UTI).
    • Chronic constipation.
  • Secondary bedwetting often has an underlying cause, such as diabetes, UTI, constipation, psychological problems (for example behavioural or emotional problems), or family problems (vulnerable child or family).

 [NICE, 2010; Caldwell, 2013; Nevéus, 2020; APA, 2022; Fernandes, 2023; EAU, 2024]

How common is it?

  • Bedwetting is common, although the exact prevalence is unknown.
    • Estimated prevalence rates are 5–10% at 7 years of age and 1–2% in adolescents.
    • A UK-based report states that between 2–3% of 12–14-year-olds and 1–2% of people aged 15 years and older wet the bed twice a week on average.
    • Bedwetting is more common in boys than girls, with a 2:1 male-to-female ratio.
    • In otherwise healthy adults aged 18 to 64 years, the prevalence of enuresis is approximately 0.5%.

[BMJ Best Practice, 2023; EAU, 2024] 

What are the risk factors?

  • Risk factors associated with bedwetting include:
    • A family history — the risk of bedwetting is strongly associated with a parental history of enuresis. Genetic studies have reported a link to a number of gene loci.
    • Male sex — bedwetting is more common in boys than girls, with a 2:1 male-to-female ratio.
    • Developmental delay (physical or intellectual).
    • Constipation, faecal incontinence, and daytime urinary incontinence.
    • Psychological or behavioural disorders, such as attention deficit hyperactivity disorder (ADHD); autism spectrum disorder; and anxiety, depressive, and conduct disorders. 
    • Sleep apnoea and upper airway obstructive symptoms.

[NICE, 2010; Caldwell, 2013; Nevéus, 2020; Lauters, 2022; BMJ Best Practice, 2023; EAU, 2024]

What is the prognosis?

  • Most children who have bedwetting without daytime symptoms become continent by adolescence [APA, 2022].
  • Bedwetting resolves spontaneously in 5–10% of affected children each year [APA, 2022].
  • Spontaneous resolution is thought to be much rarer in children who wet the bed most nights and not just sporadically [Nevéus, 2020].
  • In a prospective cohort study, the median age of dryness at night was 4 years, and 3.5 years during the day. Longitudinal studies have shown an annual resolution rate of bedwetting of approximately 15% without any intervention [BMJ Best Practice, 2023; EAU, 2024].
  • The European Association of Urology (EAU) reports that 7 out of 100 children with bedwetting at 7 years of age will continue to have nocturnal enuresis into adulthood [EAU, 2024].

What is the impact of bedwetting?

  • Bedwetting can impact a child or young person's emotional and social wellbeing, as well as their behaviour [NICE, 2010; Nevéus, 2020; EAU, 2024; NSPCC, 2024].
    • Children and young people with bedwetting may [NICE, 2010]:
      • Feel guilt, shame, humiliation, victimization, or loss of self-esteem. They may also have a feeling of helplessness or a lack of hope and optimism. In addition, they may feel that they are different from other children.
      • Avoid social activities, such as sleepovers or school trips.
      • Have higher than average levels of oppositional behaviour and conduct problems [Joinson, 2007; BMJ Best Practice, 2023].
  • Bedwetting can be stressful for the parents or carers of the child or young person [EAU, 2024].
    • The cost of caring for a child or young person with bedwetting can be considerable (for example the cost of extra laundry, extra bed sheets, mattress replacement, and pull ups), which can have a significant effect on family finances.
    • There is a risk that a minority of parents/carers may punish the child or young person for wetting the bed (including physical punishment) [Sapi, 2009].

Diagnosis of enuresis

How should I assess a child with bedwetting?

  • If the child is younger than 5 years of age, ask the parents/carers whether daytime toilet training has been attempted.
    • If it has not been attempted, determine the reason for this.
  • Determine the type of bedwetting the child or young person is experiencing. To do this: 
  • Consider the possibility of child maltreatment if:
    • The child is reported to be deliberately bedwetting.
    • Parents or carers are seen or reported to punish the child for bedwetting, despite professional advice that the symptom is involuntary.
    • The child has secondary daytime wetting or secondary bedwetting that persists despite adequate assessment and management, unless there is a medical explanation (for example urinary tract infection) or a clearly identified stressful situation that is not part of maltreatment (for example bereavement or parental separation).
    • For information on how to recognize and manage suspected maltreatment, see the CKS topic on Child maltreatment - recognition and management.
      • Be aware that in rare cases, female genital mutilation is associated with enuresis/urinary incontinence.
  • Do not perform urinalysis routinely in children and young people with bedwetting, unless any of the following apply:
    • Bedwetting started in the past few days or weeks.
    • There are daytime symptoms.
    • There are signs of ill health.
    • The history, symptoms, or signs are suggestive of urinary tract infection.
      • Be aware that urine dipstick tests are subject to false-negative and false-positive results, which can be caused by factors such as contamination, incorrect preservation, or excessively long storage. For more information, see the CKS topic on Urinary tract infection - children.
    • There are clinical features suggestive of diabetes mellitus.
  • Where appropriate, include the child or young person in the assessment. Ask:
    • Whether the child or young person thinks there is a problem.
    • What they think is the main problem.
    • What they hope the treatment will achieve.

How should I assess a child or young person with primary bedwetting without daytime symptoms?

  • If a child or young person presents with primary bedwetting without daytime symptoms, assess:
    • The pattern of bedwetting, including:
      • How many nights a week, and how many times a night, bedwetting occurs — frequent bedwetting is less likely to resolve spontaneously than infrequent bedwetting.
      • The quantity of urine passed.
      • The times of night that bedwetting occurs.
      • Whether the child or young person wakes up after bedwetting.
    • The child or young person's sleep quality:
      • Determine if the parents/carers have noticed features suggestive of obstructive sleep apnoea, such as snoring and breathing pauses while sleeping. For more details, please see the CKS topic on Obstructive sleep apnoea syndrome.
    • The child or young person's fluid intake throughout the day.
      • Ask whether the parents/carers are restricting fluid intake owing to bedwetting. Inadequate fluid intake may mask an underlying bladder problem, such as overactive bladder disorder, and may impede the development of an adequate bladder capacity.
      • Nocturnal polyuria can result from a child obtaining most of their daily fluid intake after school instead of gradually throughout the day.
      • Consider asking the parents/carers to keep a 2-week diary of the child or young person's fluid intake, bedwetting, and toileting patterns. This may also involve weighing nappies or pull-ups to understand how much urine the child is passing at night, compared with during the day.
    • The home situation, including:
      • If there is easy access to the toilet at night.
      • Whether the child or young person shares a bedroom — this may affect the decision to use an enuresis alarm.
    • The reason for the consultation. For example:
      • Reassurance — bedwetting is considered to be normal in children younger than 5 years of age.
      • Short-term treatment (for a sleepover or school trip) or long-term treatment.
    • Whether the child or young person and the parents/carers are willing or able to take part in behavioural interventions, such as using an enuresis alarm.
    • How the parents/carers are coping with the practical impact of bedwetting, to determine if they need support.
  • If the child is younger than 5 years of age, consider assessing for constipation.
    • Undiagnosed chronic constipation is a common cause of wetting and soiling in younger children.

How should I assess a child or young person with bedwetting who has daytime symptoms?

  • If a child or young person is bedwetting and has daytime symptoms, assess:
    • The pattern of bedwetting, including:
      • If daytime symptoms occur only in some situations.
      • If the child or young person avoids using the toilet at school or other settings.
      • If the child or young person goes to the toilet more or less frequently than his or her peers.
    • The child or young person's fluid intake throughout the day.
      • Ask whether the parents/carers are restricting fluid intake owing to bedwetting. Inadequate fluid intake may mask an underlying bladder problem, such as overactive bladder disorder, and may impede the development of an adequate bladder capacity.
      • Consider asking the parents/carers to keep a 2-week diary of the child or young person's fluid intake, bedwetting, and toileting patterns. This may also involve weighing nappies or pull-ups to understand how much urine the child is passing at night, compared with during the day.
    • For an underlying cause, such as:
      • Chronic constipation — undiagnosed chronic constipation is a common cause of wetting and soiling in younger children. See the CKS topic on Constipation in children for more information.
      • Urinary tract infection. See the CKS topic on Urinary tract infection - children for more information.
      • Congenital malformations — examine the child's back to look for signs of congenital spinal malformations, such as dimples or a hairy patch.
    • Whether the child or young person and the parents/carers are willing or able to take part in behavioural interventions, such as using an enuresis alarm.
    • How the parents/carers are coping with the practical impact of bedwetting, to determine if they need support.

How should I assess a child with secondary bedwetting?

  • Assess for an underlying cause that may have triggered bedwetting, such as:
  • Determine the pattern of bedwetting, including:
    • When bedwetting started — bedwetting that has started in the last few days or weeks may be a presentation of a systemic illness (for example UTI), or a change in the child's environment (for example bullying or abuse).
    • How many nights a week, and how many times a night, bedwetting occurs — frequent bedwetting is less likely to resolve spontaneously than infrequent bedwetting.
    • How many times a night bedwetting occurs.
    • The quantity of urine passed.
    • The times of night that bedwetting occurs.
    • Whether the child or young person wakes up after bedwetting.
  • Consider asking the parents/carers to keep a 2-week diary of the child or young person's fluid intake, bedwetting, and toileting patterns. ​​​​​

Basis for recommendation

These recommendations are largely based on the National Institute for Health and Care Excellence (NICE) guideline Bedwetting in under 19s [NICE, 2010].

Assessment

  • Expert opinion is that a careful clinical history is fundamental to the evaluation of enuresis [Nevéus, 2020; EAU, 2024].
  • Recommendations on how to assess a child with bedwetting are largely based on the expert opinion of the NICE guideline development group (GDG) [NICE, 2010].
    • The GDG identified 34 studies that looked at different methods for assessing bedwetting. Most of these studies were small cohort studies or case series in children in secondary or tertiary referral centres. The GDG considered the evidence identified to be of poor quality and were unable to use it to guide decision-making.
Sleep apnoea
  • There is strong evidence of a link between obstructive sleep apnoea and enuresis. Expert opinion in review articles by the International Children's Continence Society and the Canadian Paediatric Society state that treatment of obstructive sleep apnoea can resolve enuresis  [Nevéus, 2020; Harris, 2023].
Assessing for underlying causes of bedwetting with daytime symptoms, and secondary bedwetting
  • Primary bedwetting with daytime symptoms is usually caused by disorders of the lower urinary tract, such as an overactive bladder, but may also be caused by congenital malformations or neurological disorders [Lauters, 2022]. It is occasionally caused by chronic constipation or urinary tract infection.
    • The recommendation to examine the child's back for signs of congenital spinal malformations, such as dimples or hairy patch, is based on expert opinion in a review article [Lauters, 2022].
  • Secondary bedwetting may have an underlying cause, such as diabetes, urinary tract infection, constipation, psychological problems (for example behavioural or emotional problems), or family problems (vulnerable child or family). NICE states that although most children with bedwetting will not have an underlying systemic illness, it is important that these are considered, especially if bedwetting has started recently [NICE, 2010].
Keeping a diary
  • NICE recommends considering keeping a diary of symptoms because in order to make a good assessment, healthcare professionals need to understand the symptoms experienced by the child, and the child's drinking and toileting behaviour [NICE, 2010]. It is thought that:
    • Parents or carers are often not aware of their child or young person’s drinking and toileting behaviour when the child or young person spends a lot of their time outside the home. A diary may help the child and family recognize the problem and monitor progress.
    • When the child is managed in pull ups or nappies, it can sometimes be useful to weigh these to inform an understanding of how much urine the child is passing at night, compared with how much they pass when urinating during the day.
  • The recommendation to keep a diary for 2 weeks is based on expert consensus opinion from the NICE GDG [NICE, 2010].
When to consider child maltreatment
  • This recommendation is based on the NICE guidelines Bedwetting in under 19s [NICE, 2010] and Child maltreatment: when to suspect maltreatment in under 18s [NICE, 2017].
    • The NSPCC has issued guidance on Continence Issues for professionals working with children and young people, including information on recognising and responding to suspected safeguarding concerns including abuse. This guidance also states that female genital mutilation can lead to incontinence and difficulties with urination [NSPCC, 2024].
Urinalysis
  • These recommendations are based on the expert opinion of the NICE GDG [NICE, 2010].
    • The NICE GDG found no evidence to support the routine use of urinalysis in children with bedwetting.
    • Urinalysis was, however, recommended for bedwetting with daytime symptoms, and if symptoms only started in the past few days or weeks, in order to determine if UTI is a likely underlying cause.
Including the child or young person in the assessment
    • This recommendation is based on the expert opinion of the NICE GDG [NICE, 2010].
      • The GDG states that it is important to consider the views of the child or young person (as well as the family) in order to understand the expectations of the child or young person and their family/carers.

Management

Scenario: Primary bedwetting without daytime symptoms

From age 24 months to 19 years.

How should I manage bedwetting without daytime symptoms in children younger than 5 years of age?

  • Explain that bedwetting is not the child's fault. 
    • It occurs because the volume of urine produced at night exceeds the capacity of the bladder to hold it, and the sensation of a full bladder does not wake the child.
  • Reassure the parents or carers that many children younger than 5 years of age wet the bed, and this usually resolves without treatment. 
    • Bedwetting usually resolves as children get older because they develop an increased bladder capacity, and/or produce less urine at night, and/or learn to wake to the sensation of a full bladder.
  • If the child has features suggestive of sleep apnoea, manage as appropriate. For further information, see the CKS topic on Obstructive sleep apnoea syndrome.
  • Give advice on:
    • Diet and fluid intake. Advise that the child should:
      • Eat a healthy diet; they should not restrict their diet as a form of treatment for bedwetting.
      • Have adequate daily fluid intake.
      • Avoid drinking caffeine-based drinks (such as colas, coffee, and tea) before sleep.
      • Avoid drinking large volumes of fluid before bedtime.
    • Toileting patterns. Advise that:
      • The child should be encouraged to empty their bladder regularly during the day and before sleep (between 4–7 times in total).
      • A waterproof mattress and duvet cover, absorbent quilted sheets, and bed pads can be used.
      • There should be easy access to a toilet and/or potty at night.
      • If the child has been toilet trained by day for longer than 6 months, they should consider a trial of at least 2 nights in a row without nappies or pull-ups (appropriate waterproof mattress protection will be required).
    • Lifting and waking. Advise that:
      • Lifting or waking the child during the night (at regular times or randomly) does not promote long-term dryness. However, if the child wakes at night, they should be taken to the toilet.
      • Waking of children should be used only as a practical measure in the short-term management of bedwetting.
    • Positive reward systems. Advise that:
      • Positive reward systems may be offered to children who have some dry nights. They should be adapted to the age of the child.
      • Rewards may also be given for drinking recommended levels of fluid during the day and for using the toilet before going to bed.
      • Reward systems that penalise the child or remove previously gained rewards are not recommended.
      • The child should not be punished for bedwetting as this has the potential to humiliate the child and reduce their self esteem. 
  • Provide additional sources of information and support.

Basis for recommendation

These recommendations are based largely on the National Institute for Health and Care Excellence (NICE) guideline Bedwetting in under 19s [NICE, 2010].

Reassurance
  • Treatment is generally not considered for children younger than 5 years of age, as bedwetting is considered to be normal in this age group.
  • The European Association of Urology (EAU) states that children younger than 5 years of age in whom spontaneous cure is likely should not be treated. However, the family/carers should be informed about the involuntary nature of bedwetting, the high incidence of spontaneous resolution, and the fact that punishment will not help to improve the condition [EAU, 2024].
Sleep apnoea
  • There is strong evidence of a link between obstructive sleep apnoea and enuresis. Expert opinion in review articles by the International Children's Continence Society and the Canadian Paediatric Society state that treatment of obstructive sleep apnoea can resolve enuresis  [Nevéus, 2020; Harris, 2023].
Fluid intake
  • The recommendation that children should have an adequate fluid intake is based on expert consensus opinion of the NICE guideline development group (GDG) [NICE, 2010]. NICE found no evidence that fluid restriction is effective for treating bedwetting and states that it is important to discuss adequate fluid intake with the parents or carers because:
    • If fluids are restricted, the presence or absence of daytime symptoms may not be apparent.
    • If the child drinks adequate fluids during the day, this may prevent them from needing to drink larger quantities nearer bedtime. An expert review article noted that some studies recommend that 80% of the child or young person's daily fluid intake should occur before 4pm [Harris, 2023].
  • The NICE GDG noted that there is no evidence on the effect of fizzy drinks but were concerned that many children might be drinking caffeine-containing drinks (which are diuretics and bladder irritants) and that these might not be helpful in general or specifically for urinary symptoms. The GDG felt this was a good opportunity to reiterate these messages.
Diet
  • NICE found no evidence that restricting the child's diet is effective for treating bedwetting and recommended that it is important to make sure the child is eating healthily [NICE, 2010].
Toileting patterns
  • The recommendation that passing urine 4–7 times in a day is normal is based on the expert opinion of the NICE GDG [NICE, 2010].
    • The GDG extrapolated this frequency from the International Children's Continence Society (ICCS) criteria, which suggest that less than 3 times per day or more than 8 times a day is abnormal.
Lifting
  • NICE found no evidence on lifting and advises that lifting does not promote long-term dryness.
Waking
  • NICE found very low-quality evidence that waking is effective for treating bedwetting [NICE, 2010]. 
    • The recommendation to use waking as a short-term, practical measure is based on the expert opinion of the NICE GDG.
    • The recommendation that self-instigated waking may be used in young people is also based on the expert opinion of the NICE GDG. They state that some young people successfully use waking to ensure dry nights, and should not be dissuaded from this.
    • The NICE GDG recommends that lifting without waking is potentially counterproductive as the child does not learn to recognize the sensation of a full bladder.
Trial without pull ups or nappies
  • The recommendation to use a trial without pull ups or nappies is based on the expert opinion of the NICE GDG [NICE, 2010].
    • The GDG felt that children (including those with behavioural or attention difficulties) in pull ups or nappies may be considered for a trial without them if they are toilet trained by day.
Reward systems
  • NICE identified 10 randomized controlled trials that assessed the effectiveness of rewards systems; however, most of these studies were of low- or very-low-quality [NICE, 2010]. Of these studies:
    • One trial found that star charts were more effective than unstructured play therapy. This trial suggested that it is not just the interaction with the child that causes dryness, but the focus on bedwetting behaviours that leads to success.
    • Three trials found that dry bed training with an enuresis alarm, cognitive behaviour therapy, enuresis alarm, and stop-start training gave fewer wet nights; however, there was no difference for 14 dry nights and drop-out rates.
  • The NICE GDG states that reward systems are easier to implement than other treatments (such as dry bed training with an enuresis alarm, cognitive behavioural therapy, enuresis alarm, and stop-start training).
  • The recommendation to use reward systems alone in children who are able to achieve some dry nights is based on the expert opinion of the NICE GDG.
Sources of support
  • This recommendation is based on the expert opinion of the NICE GDG [NICE, 2010].
Treatments not recommended
  • Bladder training and retention control training are not recommended because only very poor-quality trials were identified, and the NICE GDG did not believe that the evidence for the interventions was sufficient to recommend their use ahead of other treatments [NICE, 2010].
    • Although there was no evidence of harms from these studies, the NICE GDG felt that interrupting voiding or encouraging infrequent urination may promote voiding dysfunction.
    • Dry bed training is not recommended because there is very poor-quality evidence to support its use. In addition, the GDG felt that some components of dry bed training were unacceptably punitive, inappropriate, and potentially psychologically damaging.

How should I manage bedwetting without daytime symptoms in children aged 5 years and older?

  • Explain that bedwetting is not the child or young person's fault. 
    • It occurs because the volume of urine produced at night exceeds the capacity of the bladder to hold it, and the sensation of a full bladder does not wake the child or young person.
  • Reassure the parents or carers that bedwetting resolves as children get older because they develop an increased bladder capacity, and/or produce less urine at night, and/or learn to wake to the sensation of a full bladder.
  • Give advice on:
    • Diet and fluid intake. Advise that the child or young person should:
      • Eat a healthy diet; they should not restrict their diet as a form of treatment for bedwetting.
      • Have adequate daily fluid intake. Recommended adequate daily fluid intake from drinks are:
        • At 5–8 years of age — 1000–1400 mL (girls); 1000–1400 mL (boys).
        • At 9–13 years of age — 1200–2100 mL (girls); 1400–2300 mL (boys).
        • At 14–18 years of age — 1400–2500 mL (girls); 2100–3200 mL (boys).
      • Avoid drinking caffeine-based drinks (such as colas, coffee, and tea) before sleep.
      • Avoid drinking large volumes of fluid before bedtime — some experts recommend that 80% of the child or young person's fluid intake should occur before 4 pm.
    • Toileting patterns. Advise that:
      • The child or young person should be encouraged to empty their bladder regularly during the day and before sleep (between 4–7 times in total).
      • A waterproof mattress and duvet cover, absorbent quilted sheets, and bed pads can be used.
      • There should be easy access to a toilet at night.
      • If the child or young person has been toilet trained by day for longer than 6 months, they should consider a trial of at least 2 nights in a row without nappies or pull-ups (appropriate waterproof mattress protection will be required). A longer trial can be considered in older children, children who achieve a reduction in wetness, and those whose family circumstances allow the trial to continue.
    • Lifting and waking. Advise that:
      • Lifting or waking the child or young person during the night (at regular times or randomly) does not promote long-term dryness. However, if they wake at night, they should be taken to the toilet.
      • Waking of children and young people should be used only as a practical measure in the short-term management of bedwetting.
      • Young people with bedwetting who have not responded to treatment may find self-instigated waking (for example using a mobile phone alarm or alarm clock) a useful management strategy.
    • Positive reward systems. Advise that:
      • Positive reward systems may be offered to children who have some dry nights. They should be adapted to the age of the child or young person. 
      • Rewards may be given for drinking recommended levels of fluid during the day, using the toilet before going to bed, engaging in management (for example taking medication or helping to change sheets).
      • Reward systems that penalise the child or young person, or remove previously gained rewards are not recommended.
      • The child or young person should not be punished as this has the potential to humiliate them and reduce their self esteem. 
  • If the child or young person has features suggestive of sleep apnoea, manage as appropriate. For further information, see the CKS topic on Obstructive sleep apnoea syndrome.
  • Offer treatment to children and young people whose bedwetting has not responded to advice on fluids, toileting, or an appropriate reward system.
    • If rapid or short-term control of bedwetting is required (for example for sleepovers or school trips), offer treatment with desmopressin.
    • If long-term treatment is required, offer treatment with an enuresis alarm (first-line treatment). 
      • A positive, age-appropriate reward system should be used with enuresis alarms to reward desired behaviour.
      • Desmopressin is less preferred but may be considered if an alarm is considered undesirable or innapropriate.
    • If bedwetting is infrequent (less than twice a week), reassure the parents or carers that bedwetting may resolve without treatment and offer the option of a wait-and-see approach.
  • Provide additional sources of information and support.
  • If bedwetting has not responded to at least two complete courses of treatment with either an alarm or desmopressin (this may be one course of each treatment, or two of the same), refer the child or young person to secondary care, an enuresis clinic, or a community paediatrician, depending on local protocols and availability.
    • Further assessment is required for factors that may be associated with a poor response, such as an overactive bladder, an underlying disease, or social and emotional factors.
    • Tricyclic antidepressants (such as imipramine) or antimuscarinics (such as oxybutynin) may be initiated in secondary or primary care following an assessment by a healthcare professional with expertise in managing bedwetting.

Basis for recommendation

These recommendations are largely based on the National Institute for Health and Care Excellence (NICE) guideline Bedwetting in under 19s [NICE, 2010].

Fluid intake
  • The recommendation that children should have an adequate fluid intake is based on expert consensus opinion of the NICE guideline development group (GDG) [NICE, 2010]. NICE found no evidence that fluid restriction is effective for treating bedwetting and states that it is important to discuss adequate fluid intake with the parents or carers because:
    • If fluids are restricted, the presence or absence of daytime symptoms may not be apparent.
    • If the child drinks adequate fluids during the day, this may prevent them from needing to drink larger quantities nearer bedtime. An expert review article noted that some studies recommend that 80% of the child or young person's daily fluid intake should occur before 4pm [Harris, 2023]
  • The NICE GDG noted that there is no evidence on the effect of fizzy drinks but were concerned that many children might be drinking caffeine-containing drinks (which are diuretics and bladder irritants) and that these might not be helpful in general or specifically for urinary symptoms. The GDG felt this was a good opportunity to reiterate these messages.
Diet
  • NICE found no evidence that restricting the child's diet is effective for treating bedwetting and recommended that it is important to make sure the child is eating healthily [NICE, 2010].
Toileting patterns
  • The recommendation that passing urine 4–7 times in a day is normal is based on the expert opinion of the NICE GDG [NICE, 2010].
    • The GDG extrapolated this frequency from the International Children's Continence Society (ICCS) criteria, which suggest that less than 3 times per day or more than 8 times a day is abnormal.
Lifting
  • NICE found no evidence on lifting and advises that lifting does not promote long-term dryness [NICE, 2010].
Waking
  • NICE found very low-quality evidence that waking is effective for treating bedwetting [NICE, 2010]. 
    • The recommendation to use waking as a short-term, practical measure is based on the expert opinion of the NICE GDG.
    • The recommendation that self-instigated waking may be used in young people is also based on the expert opinion of the NICE GDG. They state that some young people successfully use waking to ensure dry nights, and should not be dissuaded from this.
    • The NICE GDG recommends that lifting without waking is potentially counterproductive as the child does not learn to recognize the sensation of a full bladder.
Trial without pull ups or nappies
  • The recommendation to use a trial without pull ups or nappies is based on the expert opinion of the NICE GDG [NICE, 2010].
    • The GDG felt that children (including those with behavioural or attention difficulties) in pull ups or nappies may be considered for a trial without them if they are toilet trained by day.
Reward systems
  • NICE identified 10 randomized controlled trials that assessed the effectiveness of rewards systems; however, most of these studies were of low- or very-low-quality [NICE, 2010]. Of these studies:
    • One trial found that star charts were more effective than unstructured play therapy. This trial suggested that it is not just the interaction with the child that causes dryness, but the focus on bedwetting behaviours that leads to success.
    • Three trials found that dry bed training with an enuresis alarm, cognitive behaviour therapy, enuresis alarm, and stop-start training gave fewer wet nights; however, there was no difference for 14 dry nights and drop-out rates.
  • The NICE GDG states that reward systems are easier to implement than other treatments (such as dry bed training with an enuresis alarm, cognitive behavioural therapy, enuresis alarm, and stop-start training).
  • The recommendation to use reward systems alone in children who are able to achieve some dry nights is based on the expert opinion of the NICE GDG.
Sleep apnoea
  • There is strong evidence of a link between obstructive sleep apnoea and enuresis. Expert opinion in review articles by the International Children's Continence Society and the Canadian Paediatric Society state that treatment of obstructive sleep apnoea can resolve enuresis  [Nevéus, 2020; Harris, 2023].
Treatments
  • Enuresis alarm and desmopressin.
  • Wait-and-see approach.
    • CKS recommends considering a wait-and-see approach for older children with infrequent bedwetting as this is more likely to resolve without treatment than frequent bedwetting.
Sources of support
  • This recommendation is based on the expert opinion of the NICE GDG [NICE, 2010].
Referral
  • NICE recommends that children with primary bedwetting without daytime symptoms should be referred if symptoms have not responded to courses of treatment with an alarm and/or desmopressin [NICE, 2010]. This is because these children may require further assessment of factors that may be associated with a poor response, such as an overactive bladder, an underlying disease, or social and emotional factors. However, they do not state how many courses may be tried before referral is considered.
  • Previous expert reviewers of this CKS topic felt that no more than two courses of treatment should be tried before referral because repeated failed attempts reduce the future success of treatment.
  • The NICE GDG stated that a tricyclic antidepressant (TCA) or an antimuscarinic may be considered if the child has not responded to all other treatment and has been assessed by a healthcare professional with expertise in the management of bedwetting [NICE, 2010]. The GDG were specifically concerned about the potential adverse effects of TCAs and their danger in overdose.
Treatments not recommended
  • Bladder training and retention control training are not recommended because only very poor-quality trials were identified for bladder training and retention control training, and the NICE GDG did not believe that the evidence for the interventions was sufficient to recommend their use ahead of other treatments [NICE, 2010].
    • Although there was no evidence of harms from these studies, the NICE GDG felt that interrupting voiding or encouraging infrequent urination may promote voiding dysfunction.
    • Dry bed training is not recommended because there is very poor-quality evidence to support its use. In addition, the GDG felt that some components of dry bed training were unacceptably punitive, inappropriate, and potentially psychologically damaging. The punitive elements were identified as repetitive (20 times) positive practice, being told they were wet and informing visitors to the house they were trying to become dry, sleep loss even when dry (being woken to check if they were dry), and reprimanding.

Enuresis alarms

  • Enuresis alarms are generally considered a first-line treatment for bedwetting unless:
    • The child or young person or their parents/carers do not want to use one.
    • The child or young person wets the bed (infrequently) less than once or twice a week.
    • Parents/carers have emotional difficulty coping with the burden of bedwetting.
    • Parents/carers express anger, negativity, or blame towards the child.
    • The child or young person is younger than 7 years of age and is not able to use an alarm.
      • The decision to use an alarm in a child younger than 7 years of age is based on the child's maturity, understanding of the alarm, and motivation.
  • Provide detailed information on enuresis alarms to the child or young person and their parents/carers.
    • This should include information on the aims of alarm treatment, how the enuresis alarm works, and how to obtain an enuresis alarm (enuresis alarms cannot be prescribed on the NHS).
    • Advise that enuresis alarms have a high long-term success rate, but they may not suit all families. Using an alarm involves a significant commitment from the child or young person and the parents/carers. 
    • Advise that a positive, age-appropriate reward system should be used with enuresis alarms to reward desired behaviour.
    • See the section on Information on enuresis alarms for further information.
  • Assess response after 4 weeks:
    • If there are no signs of a response (such as smaller wet patches, fewer wetting episodes per night, or fewer wet nights), stop the treatment.
    • If there are signs of a response, continue alarm treatment until a minimum of 2 weeks uninterrupted dry nights has been achieved.
    • If complete dryness is not achieved after 3 months, assess whether it is appropriate to continue with alarm treatment. Only continue with alarm treatment if the bedwetting is still improving and the child or young person and parents/carers are motivated to continue.
  • If bedwetting does not respond to initial alarm treatment, consider offering:
    • Combination treatment with an alarm and desmopressin, or
    • Desmopressin alone if the child or young person and/or the parents/carers do not want to continue using an enuresis alarm.
  • If there is a partial response to combination treatment of an alarm and desmopressin, consider offering desmopressin alone.

What information and advice should I give parents or carers regarding enuresis alarms?

  • Explain that enuresis alarms have sensor pads that sense wetness. 
    • The sensor is linked to an alarm that wakes the child or young person if it becomes wet.
    • There are two main types of enuresis alarms:
      • Beside alarms — where a noise box is placed next to the child or young person's bed and a sensor pad is positioned under a draw sheet beneath the child or young person in the bed.
      • Body-worn alarms — where a tiny sensor is attached to the child or young person's pants, for example between two pairs of tightly fitting underpants, and the alarm is worn on the pyjama top.
    • Vibrating alarms are also available for those with a hearing impairment.
  • Explain that the aims of alarm treatment are to train the child or young person to:
    • Recognize the need to pass urine.
    • Wake to go to the toilet or hold on.
    • Learn over time to hold on or to wake spontaneously, and stop wetting the bed.
  • Advise that:
    • Alarms have a high long-term success rate, but they may not suit all families. Using an alarm involves a significant commitment from the child or young person and the parents/carers:
      • The child or young person and the parents/carers will require training on how to use the alarm.
      • The alarm can disrupt sleep.
      • The parents/carers may need to help the child or young person to wake to the alarm.
      • A record of the child or young person's progress should be kept (for example if and when they wake and how wet they are).
      • Alarms are most effective when used by experienced practitioners (with frequent follow up every 3–4 weeks).
    • A positive, age-appropriate reward system should be used with enuresis alarms to reward desired behaviour. Behaviour that should be rewarded includes:
      • Waking up when the alarm goes off.
      • Going to the toilet after the alarm has gone off.
      • Returning to bed and resetting the alarm.
    • It may take a few weeks for the early signs of a response to the alarm to occur. Signs of a response include:
      • Smaller wet patches.
      • Waking to the alarm.
      • The alarm going off later and fewer times per night.
      • Fewer wet nights.
    • Dry nights may take weeks to achieve and may be a late sign of response to the alarm.
    • If the child or young person relapses following response to alarm treatment, they should start using the alarm again. There is no need to consult a healthcare professional.
  • Enuresis alarms cannot be prescribed on the NHS.
    • They can be borrowed from the local enuresis adviser or bought privately from ERIC (The Children's Bowel & Bladder Charity, telephone 0845 370 8008, www.eric.org.uk).

Basis for recommendation

These recommendations are based largely on the National Institute for Health and Care Excellence (NICE) guideline Bedwetting in under 19s [NICE, 2010].

Enuresis alarms
  • The NICE guideline development group (GDG) found low-quality evidence from randomized controlled trials (RCTs) that when compared with no treatment, enuresis alarms were effective for treating bedwetting (effectiveness was defined as 14 consecutive dry nights, or a mean reduction in the number of wet nights at the end of treatment) [NICE, 2010].
    • NICE recommends treatment with an enuresis alarm as a first-line option because although they found that there was no significant difference between desmopressin and enuresis alarms, they also found that bedwetting was more likely to recur in children treated with desmopressin when desmopressin treatment was stopped. Enuresis alarms are thought to develop a conditioned response of waking in response to a full bladder, which is more likely to continue after stopping alarm treatment.
    • Enuresis alarms may not be suitable for all families because they require considerable effort and perseverance from the child and family.
      • The NICE GDG considered that it was important that families were motivated to use an alarm and that in families already struggling to cope with bedwetting, the introduction of an alarm may result in punishment of the child.
      • Infrequent bedwetting is more likely to resolve spontaneously than frequent bedwetting.
  • A subsequent network meta-analysis assessed the efficacy of enuresis alarms, desmopressin, desmopressin plus alarm, and desmopressin plus anticholinergic agent treatment in the management of paediatric nocturnal enuresis [Song, 2019].
    • Desmopressin had similar efficacy to alarm therapy but a higher relapse rate.
    • Desmopressin plus alarm therapy was similar to both desmopressin and alarm monotherapy in efficacy.
    • All treatments were associated with tolerable adverse events.
Children younger than 7 years of age
  • The recommendation that enuresis alarms may be considered in children 5–7 years of age is based on the expert opinion of the NICE GDG [NICE, 2010].
    • The GDG felt that although children in this age group may not require treatment, they should not be denied treatment with an enuresis alarm if they are mature enough and motivated enough to cope with using one.
    • Treatment is generally not considered for children younger than 5 years of age as bedwetting is considered to be normal in this age group.
Information on enuresis alarms
  • The NICE GDG considered that it was important to give parents/carers as much information and advice as possible if they are considering using an enuresis alarm [NICE, 2010]. Enuresis alarms can be difficult for a child and parent/carers to use, and families may need considerable advice and support. Information that the NICE GDG considered essential were:
    • How to use the alarm.
    • What to expect from treatment.
    • The signs of response to look out for.
    • Information about dealing with problems with the alarm and how to return it.
    • Offering and agreeing appropriate support.
  • The recommendation to use a reward system in combination with an enuresis alarm is based on evidence from one very low-quality RCT and on the expert opinion of the NICE GDG [NICE, 2010].

Desmopressin

  • Consider prescribing desmopressin if:
    • A rapid onset in improvement or a short-term improvement is required (for example for sleepovers or school trips).
      • Consider starting a trial of desmopressin at least 1 week before the school trip or sleepover to determine the effectiveness of treatment.
    • The child or young person and their parents/carers are currently using an enuresis alarm and want to stop.
    • The child or young person and their parents/carers are unable or unwilling to use an enuresis alarm as a first-line treatment.
      • This includes children 5–7 years of age, who may not be considered mature enough to use an enuresis alarm.
  • Give advice on how desmopressin works, and explain that there is usually a rapid response to treatment.
  • Prescribe a low dose of oral desmopressin (Desmotabs® 200 micrograms, sublingual DesmoMelt® 120 micrograms, or Demovo®180 micrograms) initially, at bedtime.
    • If there is a response to desmopressin, continue the treatment.
    • If complete dryness has not been achieved after 1–2 weeks of treatment with low-dose desmopressin, consider advising the parents to increase the dose of desmopressin (to Desmotabs® 400 micrograms, DesmoMelt® 240 micrograms or Demovo®360 micrograms).
  • Assess the response 4 weeks after starting treatment.
    • If there are signs of a response (smaller wet patches, fewer wetting episodes per night, or fewer wet nights), continue treatment for 3 months.
      • Stop desmopressin after 3 months for 1 week to check whether dryness has been achieved (repeated courses may be used).
    • If there is a partial response to desmopressin, consider:
      • Advising the parents/carers to increase the dose of desmopressin (to Desmotabs® 400 micrograms, DesmoMelt® 240 micrograms, or Demovo®360 micrograms).
      • Advising the child to take desmopressin 1–2 hours before bedtime.
      • Continuing treatment for another 6 months — bedwetting may improve for up to 6 months after starting treatment (note: Demovo® is recommended for treatment periods of three months). 
    • If there are no signs of a response, consider:
      • Stopping treatment with desmopressin, or
      • Continuing desmopressin treatment and recommending that it is taken 1–2 hours before bedtime (ensure the child can comply with a fluid restriction for 1 hour before desmopressin is taken).
  • Review the child or young person regularly if desmopressin is being used long term.
    • Do not routinely measure weight, serum electrolytes, blood pressure, and urine osmolality.
  • Seek specialist advice if desmopressin is being considered for children or young people with:
    • Sickle cell disease — the concentrating ability of the kidneys may be lost in children with sickle cell disease, resulting in high urine output.
    • Cystic fibrosis — case reports recommend caution because of altered handling of electrolytes.
    • Behavioural, attentional, and emotional disorders — the child may not be able to comply with fluid restrictions.

What information and advice should I give parents or carers regarding desmopressin?

  • Advise that:
    • Desmopressin should be taken at bedtime.
      • It works by reducing the amount of urine the body produces at night; this mimics the action of the body's own naturally occurring antidiuretic hormone (ADH).
      • In most children and young people, levels of ADH rise overnight and reduce the volume of water excreted by the kidneys compared with during the daytime.
    • Many children and young people, but not all, will:
      • Experience a reduction in wetness.
      • Relapse when treatment is withdrawn. If the child or young person relapses, repeated courses may be used.
    • Fluid intake should be restricted to sips only, from 1 hour before taking desmopressin until 8 hours afterwards (a total of one regular glass of water may be drunk in this time). Fluid restriction is required to avoid the potential for fluid overload and hyponatraemia (low sodium levels in the blood), which can lead to hyponatraemic convulsions. Also, advise that:
      • The child or young person should avoid swallowing water when swimming (to avoid fluid overload).
      • Over-the-counter nonsteroidal anti-inflammatories, such as ibuprofen, should be avoided as they can cause water retention and increase the risk of hyponatraemia.
      • Desmopressin should be stopped if the child or young person has vomiting or diarrhoea, until fluid balance is normal.

Basis for recommendation

These recommendations are based largely on the National Institute for Health and Care Excellence (NICE) guideline Bedwetting in under 19s [NICE, 2010].

Desmopressin
  • The NICE guideline development group (GDG) found very low-quality to moderate-quality evidence from randomized controlled trials (RCTs) that desmopressin was effective for treating bedwetting (effectiveness was defined as 14 consecutive dry nights or a mean reduction in the number of wet nights at the end of treatment) [NICE, 2010].
    • Oral desmopressin is a recommended first-line for children who require a rapid response or short-term control of bedwetting (for example for sleepovers or school trips) because it has a faster response rate than enuresis alarms. It may take a few weeks for the child to respond to an enuresis alarm, whereas children treated with desmopressin usually respond rapidly.
    • Nasal desmopressin is no longer licensed for treating primary bedwetting because a significantly higher incidence of symptomatic hyponatraemia has been reported compared with oral desmopressin [MHRA, 2007].
  • A subsequent network meta-analysis assessed the efficacy of desmopressin, enuresis alarms, desmopressin plus alarm, and desmopressin plus anticholinergic agent treatment in the management of paediatric nocturnal enuresis [Song, 2019].
    • Desmopressin had similar efficacy to alarm therapy but a higher relapse rate.
    • Desmopressin plus alarm therapy was similar to both desmopressin and alarm monotherapy in efficacy.
    • Desmopressin plus anticholinergic treatment was associated with better efficacy than and a similar relapse rate to desmopressin monotherapy.
    • All treatments were associated with tolerable adverse events.
Use of desmopressin in children younger than 7 years of age
  • The recommendation to consider treatment with desmopressin in children 5–7 years of age is based on evidence from one very low-quality RCT. This trial found that children 6.6 years of age (mean age) who received a short course of desmopressin had a reduced number of wet nights during treatment. There was no difference with regards to achieving 14 consecutive dry nights. The NICE GDG concluded that desmopressin could be used in children aged between 5–7 years, particularly if short-term treatment is necessary [NICE, 2010].
    • Treatment for bedwetting is generally not considered for children younger than 5 years of age, as bedwetting is considered to be normal in younger children and usually resolves without treatment. In addition, desmopressin is not licensed for use in children younger than 5 years of age.
Dose and timing of desmopressin
  • The information on the dose of desmopressin is derived from the NICE guideline [NICE, 2010].
    • The recommendation to start desmopressin at lower doses and increase to a maximum dose is based on expert opinion from the NICE GDG, because some children will achieve benefit on lower doses.
    • The recommendations to take desmopressin 1–2 hours earlier if there has been no response or a partial response is based on the experience of the GDG and on the pharmacokinetics of desmopressin
Monitoring
  • The NICE GDG considered that there was no evidence of need to monitor weight, serum electrolytes, blood pressure, and urine osmolality in children being treated with desmopressin [NICE, 2010]. They considered that this idea of monitoring children on desmopressin may have arisen because of the other clinical conditions for which desmopressin may be used.

How should I manage children and young people who have been successfully treated and start to wet the bed again?

  • For children and young people who have been treated successfully with an enuresis alarm and start wetting the bed again:
    • Restart alarm treatment, or
    • If there is more than one recurrence of bedwetting, offer combination treatment with an alarm and desmopressin.
  • For children and young people who have responded well to desmopressin but experience recurrence when treatment is withdrawn, consider:
    • Prescribing another course of desmopressin (repeated courses may be used).
      • Withdraw desmopressin treatment at regular intervals (for 1 week every 3 months) to check whether dryness has been achieved.
    • Gradually withdrawing desmopressin rather than stopping it suddenly.
      • A suitable withdrawal regimen used in clinical trials was an increase of 'no-medication days' over an 8-week period.
    • Using an enuresis alarm instead of restarting desmopressin, if an alarm is now considered appropriate and the child or young person and/or their parents/carers want to try one.

Basis for recommendation

These recommendations are based on the National Institute for Health and Care Excellence (NICE) guideline Bedwetting in under 19s [NICE, 2010]. 

Managing recurrence
  • These recommendations are based on expert opinion of the NICE guideline development group (GDG) [NICE, 2010].
    • The NICE GDG's recommendations were based on professional experience and health economic assessment, as no trial evidence was identified.
Gradual withdrawal from desmopressin
  • NICE found evidence from two observational studies that showed that slow withdrawal of desmopressin might reduce relapse [NICE, 2010]. These studies used the following withdrawal schedules:
    • A gradual reduction of dosage by 10 micrograms every 4 weeks.
    • An increase in 'no-medication days' over an 8-week period.
  • The NICE GDG felt that there was no strong evidence for either approach and the method of withdrawal should be based on the preferences of the healthcare professional and the child or young person's family/carers [NICE, 2010].

What are the available sources of information and support?

Scenario: Primary bedwetting with daytime symptoms

From age 24 months to 19 years.

How should I manage primary bedwetting with daytime symptoms?

Note: consider investigating and treating daytime symptoms before bedwetting, if daytime symptoms predominate.

  • Manage any identified underlying cause (such as constipation or a urinary tract infection) in primary care as appropriate. For further details, see the CKS topics on Constipation in children and Urinary tract infection - children.
  • Arrange same-day referral to a multidisciplinary paediatric diabetes team for all children and young people with suspected type 1 diabetes.
  • Consider referring children with primary bedwetting and daytime symptoms to secondary care or an enuresis clinic (if appropriate and available) for further investigations and assessment if:
    • Daytime symptoms are severe.
    • There is a history of recurrent urinary tract infection.
    • There are known or suspected physical or neurological problems.
    • The child or young person has developmental, attention or learning difficulties.
    • The child or young person has behavioural or emotional problems — consider involving a professional with psychological expertise.
    • There is no identified underlying cause.
  • Be aware that while bedwetting is considered normal in children aged under five years, children over 2 years of age who are showing awareness of appropriate toileting behaviour, but are struggling to not wet themselves during the day as well as at night, may require further assessment and investigation to exclude a specific medical problem.

Basis for recommendation

These recommendations are based on the National Institute for Health and Care Excellence (NICE) guideline Bedwetting in under 19s [NICE, 2010]. 

  • Bedwetting with daytime symptoms  may have an underlying cause, such as diabetes, urinary tract infection, constipation, psychological problems (for example behavioural or emotional problems), or family problems (vulnerable child or family). Daytime symptoms can also indicate a bladder disorder such as overactive bladder or more rarely (when symptoms are very severe and persistent) an underlying urological disease, or a congenital anomaly of the urinary tract [NICE, 2010; Lauters, 2022]. 

Scenario: Secondary bedwetting

From age 24 months to 19 years.

How should I manage a person with secondary bedwetting (previously been dry at night for 6 months)?

  • Manage any identified underlying cause (such as constipation or a urinary tract infection) in primary care as appropriate. For further details, see the CKS topics on Constipation in children and Urinary tract infection - children.
  • Arrange same-day referral to a multidisciplinary paediatric diabetes team for all children and young people with suspected type 1 diabetes.
  • Consider referring children with secondary bedwetting to secondary care or an enuresis clinic (if appropriate and available) for further investigations and assessment if:
    • There is a history of recurrent urinary tract infection.
    • There are known or suspected physical or neurological problems.
    • The child or young person has developmental, attention or learning difficulties.
    • The child or young person has behavioural or emotional problems — consider involving a professional with psychological expertise.
    • There is no identified underlying cause.
  • If child maltreatment is suspected, children's social care should be contacted to discuss the need for a referral. For further information, see the CKS topic on Child maltreatment - recognition and management.

Basis for recommendation

These recommendations are based on the National Institute for Health and Care Excellence (NICE) guideline Bedwetting in under 19s [NICE, 2010]. 

  • Secondary bedwetting may be triggered by medical, emotional, or physical factors. It is important to consider underlying medical causes such as diabetes, urinary tract infection, and constipation, as well as psychological factors (for example stress, and behavioural or emotional problems), or family problems (vulnerable child or family) [NICE, 2010]. 

Prescribing information

Important aspects of prescribing information relevant to primary healthcare are covered in this section specifically for the drugs recommended in this CKS topic. For further information on contraindications, cautions, drug interactions, and adverse effects, see the electronic Medicines Compendium (eMC) or the British National Formulary (BNF).

Desmopressin

Contraindications and cautions

  • Do not prescribe desmopressin to children with:
    • Cardiac insufficiency.
    • Conditions treated with diuretics.
    • A history of hyponatraemia.
    • Polydipsia in alcohol dependence.
    • Psychogenic polydipsia.
    • Syndrome of inappropriate antidiuretic hormone secretion.
    • von Willebrand's Disease Type IIB (may result in pseudothrombocytopenia).
  • Prescribe desmopressin with caution to children with:
    • Asthma.
    • Cardiovascular disease (not indicated for nocturnal enuresis or nocturia).
    • Conditions that might be aggravated by water retention.
    • Cystic fibrosis.
    • Epilepsy.
    • Heart failure.
    • Hypertension (not indicated for nocturnal enuresis or nocturia).
    • Migraine.
    • Nocturia — limit fluid intake to minimum from 1 hour before dose until 8 hours afterwards.
    • Nocturnal enuresis — limit fluid intake to minimum from 1 hour before dose until 8 hours afterwards.
    • Renal impairment — antidiuretic effect may be reduced.

[BNF, 2024; EMC, 2024]

Adverse effects

  • Hyponatraemia and nausea are the most common adverse effects.
  • Other adverse effects include (frequency unknown) abdominal pain, aggression, allergic dermatitis, emotional disorder, fluid retention, headache and dizziness, vomiting, and weight gain.
  • Hyponatraemic seizure has also been reported.
    • Advise children and young people being treated for primary nocturnal enuresis to avoid fluid overload (including during swimming) and to stop taking desmopressin during an episode of vomiting or diarrhoea (until fluid balance normal).

[BNF, 2024; EMC, 2024]

Drug interactions

  • Avoid concurrent use of desmporessin and other drugs that can cause fluid overload and/or hyponatraemia, such as:
    • Nonsteroidal anti-inflammatory drugs.
    • Antidepressants (tricyclic antidepressants and selective serotonin reuptake inhibitors).
    • Antiepileptics (lamotrigine, and carbamazepine).
    • Chlorpromazine.
    • Loperamide.
    • Furosemide.

[BNF, 2024; EMC, 2024]

Supporting evidence

The recommendations in this CKS topic are largely based on the National Institute for Health and Care Excellence (NICE) guideline Bedwetting in under 19s [NICE, 2010].

  • In 2018, the NICE surveillance team searched for new evidence related to the whole guideline to determine whether recommendations are still up-to-date. The majority of new evidence was found to be broadly consistent with the current recommendations, and no update was made to the NICE guideline.
  • See the 2018 surveillance of bedwetting in under 19s (NICE guideline CG111) for detailed information on the surveillance process, including the evidence considered in the surveillance.

The rationale for the primary care diagnosis, management, and referral of children and young people with enuresis is discussed in the relevant basis for recommendation sections. CKS has not summarized the evidence for secondary care investigations and management as they are outside the scope of this topic.

How this topic was developed

This section briefly describes the processes used in developing and updating this topic. Further details on the full process can be found in the About Us section and on the Clarity Informatics website.

Search strategy

A full literature search was not required as this CKS topic is primarily based on the National Institute for Health and Clinical Excellence (NICE) guideline Nocturnal enuresis — the management of bedwetting in children and young people. Additional searches were requested for further evidence in the following areas:

  • Use of desmopressin in primary enuresis.

Search dates

February 2020 - November 2024

Key search terms

Various combinations of searches were carried out. The terms listed below are the core search terms that were used for Medline.

  • exp Enuresis/, exp Nocturnal Enuresis/, enuresis.tw., bedwet$.tw., bed-wet$.tw., (nighttime adj5 wet$).tw., nighttime urinary incontinence.tw., night-time urinary incontinence.tw.
  • exp Deamino Arginine Vasopressin/, desmopressin.tw.

Sources of guidelines

Sources of systematic reviews and meta-analyses

  • The Cochrane Library:
    • Systematic reviews
    • Protocols
    • Database of Abstracts of Reviews of Effects
  • Medline (with systematic review filter)
  • EMBASE (with systematic review filter)

Sources of health technology assessments and economic appraisals

Sources of randomized controlled trials

  • The Cochrane Library:
    • Central Register of Controlled Trials
  • Medline (with randomized controlled trial filter)
  • EMBASE (with randomized controlled trial filter)

Sources of evidence based reviews and evidence summaries

Sources of national policy

Patient experiences

Sources of medicines information

The following sources are used by CKS pharmacists and are not necessarily searched by CKS information specialists for all topics. Some of these resources are not freely available and require subscriptions to access content.

Stakeholder engagement

Our policy

The external review process is an essential part of CKS topic development. Consultation with a wide range of stakeholders provides quality assurance of the topic in terms of:

  • Clinical accuracy.
  • Consistency with other providers of clinical knowledge for primary care.
  • Accuracy of implementation of national guidance (in particular NICE guidelines).
  • Usability.

Principles of the consultation process

  • The process is inclusive and any individual may participate.
  • To participate, an individual must declare whether they have any competing interests or not. If they do not declare whether or not they have competing interests, their comments will not be considered.
  • Comments received after the deadline will be considered, but they may not be acted upon before the clinical topic is issued onto the website.
  • Comments are accepted in any format that is convenient to the reviewer, although an electronic format is encouraged.
  • External reviewers are not paid for commenting on the draft topics.
  • Discussion with an individual or an organization about the CKS response to their comments is only undertaken in exceptional circumstances (at the discretion of the Clinical Editor or Editorial Steering Group).
  • All reviewers are thanked and offered a letter acknowledging their contribution for the purposes of appraisal/revalidation.
  • All reviewers are invited to be acknowledged on the website. All reviewers are given the opportunity to feedback about the external review process, enabling improvements to be made where appropriate.

Stakeholders

  • Key stakeholders identified by the CKS team are invited to comment on draft CKS topics. Individuals and organizations can also register an interest to feedback on a specific topic, or topics in a particular clinical area, through the Getting involved section of the Clarity Informatics website.
  • Stakeholders identified from the following groups are invited to review draft topics:
    • Experts in the topic area.
    • Professional organizations and societies (for example, Royal Colleges).
    • Patient organizations, Clarity has established close links with groups such as Age UK and the Alzheimer’s Society specifically for their input into new topic development, review of current topic content and advice on relevant areas of expert knowledge.
    • Guideline development groups where the topic is an implementation of a guideline.
    • The British National Formulary team.
    • The editorial team that develop MeReC Publications.
  • Reviewers are provided with clear instructions about what to review, what comments are particularly helpful, how to submit comments, and declaring interests.

Patient engagement

Clarity Informatics has enlisted the support and involvement of patients and lay persons at all stages in the process of creating the content which include:

  • Topic selection
  • Scoping of topic
  • Selection of clinical scenarios
  • First draft internal review
  • Second draft internal review
  • External review
  • Final draft and pre-publication

Our lay and patient involvement includes membership on the editorial steering group, contacting expert patient groups, organizations and individuals.

Evidence exclusion criteria

Our policy

Scoping a literature search, and reviewing the evidence for CKS is a methodical and systematic process that is carried out by the lead clinical author for each topic. Relevant evidence is gathered in order that the clinical author can make fully informed decisions and recommendations. It is important to note that some evidence may be excluded for a variety of reasons. These reasons may be applied across all CKS topics or may be specific to a given topic.

Studies identified during literature searches are reviewed to identify the most appropriate information to author a CKS topic, ensuring any recommendations are based on the best evidence. We use the principles of the GRADE and PICOT approaches to assess the quality of published research. We use the principles of AGREE II to assess the quality of published guidelines.

Standard exclusions for scoping literature:

  • Animal studies
  • Original research is not written in English

Possible exclusions for reviewed literature:

  • Sample size too small or study underpowered
  • Bias evident or promotional literature
  • Population not relevant
  • Intervention/treatment not relevant
  • Outcomes not relevant
  • Outcomes have no clear evidence of clinical effectiveness
  • Setting not relevant
  • Not relevant to UK
  • Incorrect study type
  • Review article
  • Duplicate reference

Organizational, behavioural and financial barriers

Our policy

The CKS literature searches take into consideration the following concepts, which are discussed at the initial scoping of the topic.

  • Feasibility
    • Studies are selected depending on whether the intervention under investigation is available in the NHS and can be practically and safely undertaken in primary care.
  • Organizational and Financial Impact Analysis
  • Studies are selected and evaluated on whether the intervention under investigations may have an impact on local clinical service provision or national impact on cost for the NHS. The principles of clinical budget impact analysis are adhered to, evaluated and recorded by the author. The following factors are considered when making this assessment and analysis.
    • Eligible population
    • Current interventions
    • Likely uptake of new intervention or recommendation
    • Cost of the current or new intervention mix
    • Impact on other costs
    • Condition-related costs
    • In-direct costs and service impacts
    • Time dependencies
  • Cost-effectiveness or cost-benefit analysis studies are identified where available. 

We also evaluate and include evidence from NICE accredited sources which provide economic evaluations of recommendations, such as NICE guidelines. When a recommended action may not be possible because of resource constraints, this is explicitly indicated to healthcare professionals by the wording of the CKS recommendation.

Declarations of interest

Our policy

Clarity Informatics requests that all those involved in the writing and reviewing of topics, and those involved in the external review process to declare any competing interests. Signed copies are securely held by Clarity Informatics and are available on request with the permission of the individual. A copy of the declaration of interest form which participants are asked to complete annually is also available on request. A brief outline of the declarations of interest policy is described here and full details of the policy is available on the Clarity Informatics website. Declarations of interests of the authors are not routinely published, however competing interests of all those involved in the topic update or development are listed below. Competing interests include:

  • Personal financial interests
  • Personal family interest
  • Personal non-financial interest
  • Non-personal financial gain or benefit

Although particular attention is given to interests that could result in financial gains or losses for the individual, competing interests may also arise from academic competition or for political, personal, religious, and reputational reasons. An individual is not obliged to seek out knowledge of work done for, or on behalf of, the healthcare industry within the departments for which they are responsible if they would not normally expect to be informed.

Who should declare competing interests?

Any individual (or organization) involved in developing, reviewing, or commenting on clinical content, particularly the recommendations should declare competing interests. This includes the authoring team members, expert advisers, external reviewers of draft topics, individuals providing feedback on published topics, and Editorial Steering Group members. Declarations of interest are completed annually for authoring team and editorial steering group members, and are completed at the start of the topic update and development process for external stakeholders.

Competing interests declared for this topic:

None.

References

  • APA (2022) Diagnostic and Statistical Manual of Mental Disorders, 5th edition, Text Revision. Washington, DC. American Psychiatric Association. https://www.psychiatry.org [Free Full-text]
  • BMJ Best Practice (2023) Enuresis. BMJ Publishing Group.
  • BNF (2024) British National Formulary. National Institute for Health and Care Excellence. https://bnf.nice.org.uk
  • Caldwell, P., Nankivell, G. and Sureshkumar, P. (2013) Simple behavioural interventions for nocturnal enuresis in children (Cochrane Review). The Cochrane Library. John Wiley & Sons, Ltd. http://www.thecochranelibrary.com [Free Full-text]
  • EAU (2024) Paediatric urology. European Association of Urology. https://uroweb.org [Free Full-text]
  • EMC (2024) SPC for Desmopressin 240 micrograms sublingual tablets. Electronic Medicines Compendium. Datapharm Communications Ltd. https://www.medicines.org.uk/emc [Free Full-text]
  • Fernandes, A.E.R., Roveda, J.R.C., Fernandes, C.R., et al. (2023) Relationship between nocturnal enuresis and sleep in children and adolescents. Pediatric Nephrology 38(5), 1427-1438. [Abstract]
  • Harris, J., Lipson, A. and Dos Santos, J. (2023) Evaluation and management of enuresis in the general paediatric setting. Paediatric Child Health 28(6), 362-376. [Abstract]
  • Joinson, C., Heron, J., Emond, A. and Butler, R. (2007) Psychological problems in children with bedwetting and combined (day and night) wetting: a UK population-based study. Journal of Pediatric Psychology 32(5), 605-616. [Abstract]
  • Lauters, R.A., Garcia, K.W. and Arnold, J.J. (2022) Enuresis in Children: Common Questions and Answers. American Family Physician 106(5), 549-556. [Abstract]
  • MHRA (2007) Desmopressin nasal spray: removal of the primary nocturnal enuresis (bedwetting) indication. Medicines and Healthcare products Regulatory Agency. http://www.mhra.gov.uk [Free Full-text]
  • Nevéus, T., Fonseca, E., Franco, I., et al. (2020) Management and treatment of nocturnal enuresis-an updated standardization document from the International Children's Continence Society. Journal of Pediatric Urology 16(1), 10-19. [Abstract]
  • NICE (2010) CG111: Bedwetting in under 19s. National Institute of Health and Care Excellence. https://www.nice.org.uk [Free Full-text]
  • NICE (2017) Child maltreatment: when to suspect maltreatment in under 18s. National Institute of Health and Care Excellence. http://www.nice.org.uk [Free Full-text]
  • NICE (2020) QS70: Bedwetting in children and young people. National Institute of Health and Care Excellence. https://www.nice.org.uk [Free Full-text]
  • NSPCC (2024) Continence Issues. National Society for the Prevention of Cruelty to Children. https://learning.nspcc.org.uk [Free Full-text]
  • Sapi, M.C., Vasconcelos, J.S., Silva, F.G., et al. (2009) Assessment of domestic violence against children and adolescents with enuresis. Jornal de Pediatria 85(5), 433-437. [Abstract]
  • Song, P., Huang, C., Wang, Y., et al. (2019) Comparison of desmopressin, alarm, desmopressin plus alarm, and desmopressin plus anticholinergic agents in the management of paediatric monosymptomatic nocturnal enuresis: a network meta-analysis. BJU International 123(3), 388-400. [Abstract]
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