Bedwetting was once blamed on the mind; the bladder and hormones tell another story
For a long time, children who wet the bed were treated as a psychiatric problem, and parents were quietly blamed. The evidence no longer supports that view. Smaller bladders, night-time hormone patterns and deep sleep all play a part, and specialists stress that children should be told it is not their fault.
Enuresis, from an Ancient Greek word, means repeatedly being unable to hold urine at an age when that control would be expected. Night-time wetting usually happens in children who are hard to rouse. When it comes with daytime bladder trouble, such as sudden urgency, putting off trips to the toilet at school, or leaking while coughing or even giggling, doctors call it non-monosymptomatic. Wetting that returns after six dry months often follows a stressful event, such as a parental divorce.
Several physical factors show up in research. Children with enuresis tend to have a lower functional bladder capacity, sometimes holding less than half as much as their peers. Many also release less antidiuretic hormone at night, the hormone that tells the kidneys to conserve water, so they produce more urine while asleep. Sleep studies record more frequent high-pressure bladder contractions during sleep, and researchers are investigating why these children fail to wake when the bladder is full, looking at blood pressure, breathing and the hypothalamus.
Habits and circumstances matter too. Caffeine increases urine production. Many affected children drink most of their fluids after 5 PM, and one suggested pattern spreads intake so that only a fifth comes in the evening. Stress roughly triples the risk, and anxiety between the ages of 2 and 4, a sensitive window for learning night control, raises it as well. Infection is an uncommon cause when there are no other symptoms.
Left unaddressed, bedwetting can dent self-esteem and lead children to avoid social activities. Management ranges from special bedding and nightwear to behavioural approaches and medication. An updated Chinese expert consensus, revising guidance first issued in 2014, lists desmopressin for excess night urine and alarms for reduced bladder capacity as first-line options, alongside education and lifestyle changes.
Source: Enuresis
