nocturia /nokto͝or″ē·ə/ [L, nocturnus, by night; Gk, ouron, urine] , excessive urination at night. It may be a symptom of cardiac, renal, or prostatic disease or bladder outlet obstruction. The condition may also occur in people who drink excessive amounts of fluids, particularly alcohol or coffee, before bedtime or in older patients who have excess body fluids that are mobilized by lying down. Also called nycturia. Compare enuresis.
