Bedwetting
Involuntary urination during sleep in children who are old enough to be expected to stay dry, also known as nocturnal enuresis.
What is Bedwetting?
Bedwetting (nocturnal enuresis) is the involuntary release of urine during sleep in a child who is old enough to reasonably be expected to stay dry at night, typically age 5-6 and older. It is classified as primary (the child has never been consistently dry) or secondary (bedwetting resumes after at least 6 months of dryness). Bedwetting is not the child's fault and is not a behavioral problem—it results from developmental factors affecting bladder capacity, arousal, and hormone production. Most children outgrow bedwetting, but it can be distressing for children and families.
Prevalence
Bedwetting is very common: approximately 15-20% of 5-year-olds, 10% of 7-year-olds, 5% of 10-year-olds, and 1-2% of teenagers wet the bed. Boys are affected more often than girls (approximately 2:1). About 15% of affected children spontaneously become dry each year. There is a strong genetic component: if one parent wet the bed, the child has a 45% chance; if both parents did, the chance is 75%.
Causes
Bedwetting results from a combination of factors: delayed maturation of bladder control mechanisms, decreased nighttime production of antidiuretic hormone (ADH) leading to excess urine production, small functional bladder capacity, high arousal threshold (difficulty waking to bladder signals), and genetic factors. Secondary enuresis may be triggered by stress, urinary tract infections, constipation, diabetes, or sleep disorders. Rarely, structural abnormalities are involved.
Types
Primary Nocturnal Enuresis
The child has never achieved consistent nighttime dryness. This is the most common type and typically developmental.
Secondary Nocturnal Enuresis
Bedwetting resumes after at least 6 months of nighttime dryness. More likely to have an underlying cause.
Monosymptomatic Enuresis
Bedwetting without daytime wetting or other urinary symptoms.
Non-Monosymptomatic Enuresis
Bedwetting accompanied by daytime symptoms such as urgency, frequency, or daytime wetting.
Symptoms
Wet bed upon waking
The primary symptom is waking up with a wet bed from involuntary urination during sleep.
Frequency of episodes
May occur nightly, several times per week, or occasionally. Frequency varies greatly between children.
Large urine volume
Many children with enuresis produce larger-than-normal amounts of urine at night.
Difficulty waking
Many bedwetting children are deep sleepers and don't wake to bladder signals or wetness.
Emotional impact
Shame, embarrassment, low self-esteem, and anxiety about sleepovers or camps are common.
Diagnosis
Self-Assessment Questions
If you answer yes to any of these questions, consider consulting a sleep specialist:
- 1Is your child age 5 or older and still wetting the bed regularly?
- 2Has your child never had a prolonged period (6+ months) of dry nights?
- 3Or did your child have a dry period and then start wetting again?
- 4Does your child have daytime wetting or urgency as well?
- 5Is there a family history of bedwetting?
- 6Does your child snore or have other signs of sleep-disordered breathing?
Diagnosis is based on history and age. Physical examination and urinalysis rule out medical causes. Further testing is only needed if there are concerning features like daytime symptoms, recurrent UTIs, or signs of structural or neurological problems.
Medical History
Detailed history including timing, frequency, daytime symptoms, fluid intake, bowel habits, and family history.
Physical Examination
General exam including genitourinary examination, spine examination for signs of spinal abnormalities, and neurological assessment.
Urinalysis
To rule out urinary tract infection, diabetes, and kidney problems.
Bladder Diary
Recording fluid intake, voiding frequency, and estimated volumes helps assess bladder function.
Further Testing
Ultrasound, urodynamics, or other tests are only needed if there are symptoms suggesting structural or functional abnormalities.
Treatment
Many families choose to wait for spontaneous resolution with supportive measures. For those seeking active treatment, bedwetting alarms are most effective for long-term cure, while desmopressin provides rapid but often temporary improvement.
Education and Reassurance
Understanding that bedwetting is not the child's fault, is common, and usually resolves with time. Avoiding punishment is essential.
Bedwetting Alarm
The most effective long-term treatment (up to 75% success). A moisture sensor triggers an alarm that wakes the child when wetting begins, gradually conditioning the brain to respond to bladder signals.
Desmopressin (DDAVP)
A synthetic antidiuretic hormone that reduces nighttime urine production. Works quickly for short-term needs (sleepovers, camps) but bedwetting often returns when stopped.
Combination Therapy
Using both alarm and desmopressin together may be more effective than either alone for some children.
Treat Constipation
Constipation is common in bedwetting children and treating it can improve enuresis.
Address Sleep Apnea
If snoring or sleep apnea is present, treatment (often adenotonsillectomy) may resolve bedwetting.
Lifestyle Adjustments
- •Maintain regular bathroom schedule during the day
- •Encourage adequate fluid intake during the day, tapering in evening
- •Have the child urinate before bed
- •Protect the mattress with waterproof covers
- •Have the child help with cleanup (not as punishment) to build responsibility
- •Never punish or shame the child for bedwetting
- •Treat constipation if present
- •Consider using pull-ups if preferred, but these don't help treatment
- •Celebrate dry nights without pressuring about wet ones
- •Keep a calendar to track progress
Patient Support Resources
Find a Specialist
Search our directory for sleep clinics that specialize in treating bedwetting.
Search Clinics