Bedwetting, called enuresis, is the involuntary discharge of urine during sleep.
Boys are twice as often affected than girls.
Primary enuresis is bedwetting in a child who has always wet the bed. It is considered to be due to developmental delay. Rarely is a urologic, medical or neurological abnormality the cause in a child who has primary bedwetting and no daytime wetting. Secondary enuresis occurs in a child who has been dry for a period of time prior to the occurrence of bed wetting. Bedwetting can be frustrating to the child and parents, causing feelings of low self-esteem in the child.