Nocturnal enuresis, commonly called bedwetting, is unintentional passing of urine while asleep after the age at which bladder control usually occurs. Bed wetting of children may be simply a delay in the establishment of voluntary control over the act of micturition

It is the most common childhood urologic complaint and one of the most common pediatric-health problems. Most bedwetting, however, is just a developmental delay. It not an emotional problem or physical illness. Only a small percentage (5% to 10%) of bedwetting cases are caused by specific medical situations. Bed-wetting is frequently associated with a family history of the condition.