The management of headache.
D002317:Cardiovascular Agents; D019468:Disease Management; D004876:Ergot Alkaloids / Q000627:therapeutic use*; D006261:Headache / Q000628:therapy*; D008881:Migraine Disorders / Q000628:therapy*; D009525:Niacin / Q000627:therapeutic use*; D009539:Nicotinic Acids
D002317:Cardiovascular Agents; D004876:Ergot Alkaloids; D009539:Nicotinic Acids; D009525:Niacin
ERGOT ALKALOIDS/therapeutic use; HEADACHE/therapy; MIGRAINE/therapy; NICOTINIC ACID/therapeutic use