What Is Bedwetting?
Nocturnal enuresis — commonly called bedwetting — is involuntary urination during sleep in a child old enough to be expected to control their bladder. It is extremely common: about 15% of 5-year-olds, 5% of 10-year-olds and 1–2% of teenagers wet the bed. Most children grow out of it without treatment; the spontaneous resolution rate is about 15% per year.
Bedwetting is never the child's fault. It is not caused by laziness, deep sleeping, or emotional problems (though stress can worsen it). Scolding or punishing a child is counterproductive and harmful.
Why Does It Happen?
- Genetics — If one parent wet the bed, the child has a 44% chance; if both parents did, the risk rises to 77%.
- ADH deficiency — Many children do not produce enough anti-diuretic hormone at night, resulting in excess urine production during sleep.
- Small functional bladder capacity — The bladder fills quickly and cannot hold urine through the night.
- Deep sleep — The child does not wake to bladder signals.
- Constipation — A full rectum presses on the bladder and reduces capacity.
Primary vs Secondary Enuresis
Primary enuresis — the child has never achieved consistent dry nights. This is the most common form and usually has a developmental cause.
Secondary enuresis — the child was dry for at least 6 months and has started wetting again. This warrants investigation for a new cause, including UTI, diabetes, psychological stress, or a structural bladder problem.
Secondary enuresis (wet again after 6 dry months), daytime wetting as well, pain or burning on urination, increased thirst and urination, recurrent UTIs, or is over 7 and has never had a dry month. These require evaluation beyond simple reassurance.
Management Approaches
- Simple measures first (ages 5–7): Reassure the child, avoid blame. Limit fluids 2 hours before bed. Encourage a toilet visit just before sleep. Keep a star-chart reward for dry nights — this alone helps in many cases.
- Treat constipation — a high-fibre diet and adequate fluids often resolve enuresis in children with chronic constipation.
- Enuresis alarm (ages 7+): The most effective long-term treatment. A moisture sensor sounds an alarm the instant wetting begins. Over weeks, the child learns to wake before urinating. Success rate 65–70% with 3+ months of use.
- Desmopressin (DDAVP): A synthetic form of ADH taken at night. Rapidly reduces urine production. Useful for sleepovers and camps, or when alarm therapy is impractical. Does not cure the condition but provides excellent short-term control.
- Bladder training: For daytime urgency or small bladder — timed voiding and urge-deferral exercises gradually increase capacity.
What Parents Should Avoid
- Never punish, shame or mock the child — this creates anxiety which worsens wetting.
- Avoid waking the child to use the toilet during the night — this disrupts sleep without training the bladder.
- Do not restrict fluids significantly during the day — adequate hydration is essential for bladder health.
A paediatric urology consultation can identify if there is an underlying cause and recommend the right treatment path.