title: Letter: Ergotamine-induced headaches.
mesh_terms: D004878:Ergotamine / Q000009:adverse effects* / Q000627:therapeutic use; D005260:Female; D006261:Headache / Q000139:chemically induced*; D006801:Humans; D008297:Male; D008881:Migraine Disorders / Q000188:drug therapy; D012737:Sex Factors; D013375:Substance Withdrawal Syndrome; D019966:Substance-Related Disorders
chemical_list: D004878:Ergotamine