after receiving 90 mg of haloperidol and 100 mg of chlorpromazine hydrochloride within 25 hours , a 29-year-old man was found to have neuroleptic malignant syndrome ( nms ) , characterized by the acute onset of hyperpyrexia , extreme muscular rigidity , autonomic instability , and coma .
C0018546
haloperidol
C0009421
coma