Bedwetting (or enuresis or '"sleepwetting"') is involuntary urination while asleep. It is the normal state of affairs in infancy, but can be a source of embarrassment when it persists into school age or beyond.

Antidiuretic hormone (ADH), or arginine vasopressin (AVP), is a peptide hormone produced by the hypothalamus, and stored in the posterior part of the pituitary gland. ADH acts on the kidneys, concentrating the urine by promoting the reabsorption of water from the cortical collecting duct.

Bedwetting as related to Vasopressin