polydipsia - excessive thirst (as in cases of diabetes or kidney dysfunction)

polygenic disease, polygenic disorder - an inherited disease controlled by several genes at once

polyuria - renal disorder characterized by the production of large volumes of pale dilute urine; often associated with diabetes

diabetes mellitus, DM - diabetes caused by a relative or absolute deficiency of insulin and characterized by polyuria; "when doctors say `diabetes' they usually mean `diabetes mellitus'"

diabetes insipidus - a rare form of diabetes resulting from a deficiency of vasopressin (the pituitary hormone that regulates the kidneys); characterized by the chronic excretion of large amounts of pale dilute urine which results in dehydration and extreme thirst