The medical term for bed-wetting is enuresis. No one really knows why it happens. From the 1930s to the 1960s, people thought emotional problems caused bed-wetting.
Many people think differently now.
Bed-wetting may happen because the child is slow to get control over his or her bladder. Bed-wetting almost always stops by puberty. More boys than girls wet the bed. Your child may start wetting the bed again when he or she is upset. Bed-wetting runs in families.