Most children who have done it all their life and in many cases no reason can be found. Often it is passed on through the family. also happens, or has happened, to a close relative in up to 85 per cent of cases. About 57 per cent of children who wet their beds either have a brother, sister or a parent who has experienced the same problem. It may have a medical or psychological cause such as cystitis, diabetes, problems at school, at home, or the divorce of parents. One explanation could be that these children are heavy sleepers who do not wake up when their bladder is full. Also, some children developl later than others. At night, some children produce too little of the (ADH), which controls the production of urine. A nasal spray containing desmopressin may help. The child needs to be examined by a doctor who will then decide whether treatment is necessary. | 
