Studies on headache; cranial artery vasoconstriction and muscle contraction headache.
D001158:Arteries; D006257:Head; D006261:Headache / Q000209:etiology*; D006801:Humans; D009119:Muscle Contraction; D018482:Muscle, Skeletal; D009132:Muscles; D009334:Neck Muscles; D012886:Skull / Q000098:blood supply*; D014661:Vasoconstriction
CRANIUM/blood supply; HEAD/muscles; HEADACHE/etiology and pathogenesis; NECK/muscles