it can result from any of three basic defects : ( a ) inadequate urinary concentration caused by a deficiency in the secretion or action of the antidiuretic hormone vasopressin ( neurogenic or nephrogenic di ) , or excessive intake of water caused by a defect in ( b ) thirst or ( c ) psychological function ( dipsogenic or psychogenic di ) .
C0162283
nephrogenic di
C0011848
di