a disorder characterized by a failure to resist impulses, drives, or temptations to commit acts that are harmful to oneself or to others. Examples include intermittent explosive disorder, kleptomania, pathological gambling, pyromania, and trichotillomania. Other disorders that may involve problems of impulse control include substance use disorders, paraphilias, conduct disorders, and mood disorders.
in anthropology, a system of descent or inheritance in which descent is traced through the male line only (patriarchy) or through the female line only (matriarchy). Also called unilineal descent. Compare bilateral descent. See also descent group.