Some children over the age of 5 cannot control their bladder when they are asleep and leak urine. Often, bed-wetting (sometimes called “nighttime urine accidents” or “nocturnal enuresis”) stops on its own, without any kind of treatment. But it may be a sign of a medical problem, although that usually is not the case.

There are two kinds of bed-wetting: primary and secondary. Someone with primary bed-wetting has wet the bed at least sometimes since they were a baby. Secondary bed-wetting is when a child starts to wet the bed at least six months after they have learned to control their bladder at night.

Some children who have nighttime urine accidents also have daytime urine accidents. Learn more about daytime urine accidents.