trichotillomania /trik′ōtil′ōmā″nē·ə/ [Gk, thrix + tillein, to pull, mania, madness] , an impulse disorder characterized by a desire to pull out one’s hair, frequently seen in cases of severe cognitive impairment and delirium. Also called hair pulling, trichomania. See also trichologia. −trichotillomanic, trichomanic, adj.