Studies on headache: further observations on cranial and conjunctival vessels during and between attacks of vascular headache.
D000818:Animals; D001522:Behavior, Animal; D003228:Conjunctiva; D006261:Headache / Q000209:etiology*; D006801:Humans; D012886:Skull; D012919:Social Behavior; D014653:Vascular Headaches
HEADACHE/etiology and pathogenesis