Wetting the bed is a common condition for children under six years of age and usually is caused by physiological factors. However, bedwetting, also known as secondary enuresis, may return later in adolescence or even adulthood.

If you're like most parents, you had to deal with your share of soaked sheets and midnight tears when your child was small. For approximately 2 percent of girls, though, bed-wetting, or enuresis, continues well into the teenage years.