Prophylaxis of recurrent headache.
D004874:Ergonovine / Q000627:therapeutic use; D004878:Ergotamine / Q000627:therapeutic use; D006261:Headache / Q000517:prevention & control*; D006801:Humans; D008784:Methysergide / Q000627:therapeutic use; D008881:Migraine Disorders / Q000517:prevention & control
D004878:Ergotamine; D004874:Ergonovine; D008784:Methysergide