Bedwetting refers to involuntary urination in bed. Bedwetting is called "Enuresis ," from the Greek "enourin" meaning "to urinate in."Bedwetting which is also called Nocturnal Enuresis refers to involuntary passage of urine (urinary incontinence ) while asleep. Moreover, Bedwetting is a failure to control the bladder during the night. It is frequently used interchangeably with Enuresis, although Bedwetting refers to the behavior itself and Enuresis is a diagnostic category , related to the age of the child.