Cluster headache.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D003937:Diagnosis, Differential; D004878:Ergotamine / Q000627:therapeutic use; D005260:Female; D006261:Headache / Q000175:diagnosis / Q000188:drug therapy / Q000453:epidemiology / Q000209:etiology / Q000235:genetics / Q000601:surgery; D006801:Humans; D008297:Male; D008784:Methysergide / Q000627:therapeutic use; D008875:Middle Aged; D012737:Sex Factors; D013997:Time Factors
D004878:Ergotamine; D008784:Methysergide