Nocturnal enuresis or nighttime urinary incontinence, commonly called bedwetting or sleepwetting, is involuntary urination while asleep after the age at which bladder control usually occurs. Nocturnal enuresis is considered primary (PNE) when a child has not yet had a prolonged period of being dry. Secondary nocturnal enuresis (SNE) is when a chil... Found on http://en.wikipedia.org/wiki/Nocturnal_enuresis