[HEADACHES].
D000680:Amyl Nitrite; D002340:Carotid Artery Diseases; D002965:Classification; D004809:Ephedrine; D004837:Epinephrine; D004878:Ergotamine; D006261:Headache; D006632:Histamine; D006636:Histamine Release; D006801:Humans; D008881:Migraine Disorders; D009525:Niacin; D009539:Nicotinic Acids; D013035:Spasm
D009539:Nicotinic Acids; D009525:Niacin; D000680:Amyl Nitrite; D006632:Histamine; D004809:Ephedrine; D004878:Ergotamine; D004837:Epinephrine
AMYL NITRITE; CAROTID ARTERY DISEASES; CLASSIFICATION; EPHEDRINE; EPINEPHRINE; ERGOTAMINE; HEADACHE; HISTAMINE; HISTAMINE LIBERATION; MIGRAINE; NICOTINIC ACID; SPASM
CEFALEAS.