The use of analgesics in headache.
D000700:Analgesics / Q000627:therapeutic use*; D002648:Child; D004878:Ergotamine / Q000627:therapeutic use; D006261:Headache / Q000188:drug therapy*; D006801:Humans; D008881:Migraine Disorders / Q000517:prevention & control; D019966:Substance-Related Disorders
D000700:Analgesics; D004878:Ergotamine