What exactly is enuresis?

Urinate Involuntary. Passage of urine without subject's knowledge, nocturnal if at night, diurnal if by day.
Remain incontinent.. Nocturnal enuresis is the involuntary wetting that occurs during sleep beyond the age of anticipated bladder control, in general, 4 years of age . Diurnal enuresis is a wetting while awake.
Urinary incontinence. Straight off the web: en·u·re·sis [en-yuh-ree-sis] show ipa noun, medicine/medical . Lack of control of urination, especially during sleep; bed-wetting; urinary incontinence.