Fluctuations in cranial arterial tone as measured by histamine "responsiveness".
D001158:Arteries; D001921:Brain / Q000098:blood supply*; D006261:Headache / Q000209:etiology*; D006632:Histamine; D006801:Humans; D012886:Skull
D006632:Histamine
BRAIN/blood supply; HEADACHE/etiology and pathogenesis; HISTAMINE