title: Ergotamine and methysergide abuse in patients with migraine.
mesh_terms: D000328:Adult; D004361:Drug Tolerance; D004878:Ergotamine / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D008297:Male; D008784:Methysergide / Q000627:therapeutic use*; D008875:Middle Aged; D008881:Migraine Disorders / Q000188:drug therapy* / Q000209:etiology; D011602:Psychophysiologic Disorders; D013315:Stress, Psychological; D013375:Substance Withdrawal Syndrome; D019966:Substance-Related Disorders
chemical_list: D004878:Ergotamine; D008784:Methysergide