a type of severe recurrent headache associated with dilated carotid arteries and the release of histamine, characterized by sudden attacks of intense pain behind the nostril and eye on one side and accompanied by runny nose, tearing, and flushed skin.
cluster headache sufferers tend to move about while migraine sufferers usually want to lie down.
cluster headache in Medicine
cluster headache clus·ter headache (klŭs'tər) n. A recurring headache marked by severe pain in the eye or temple on one side of the head, usually occurring in males. Also called erythroprosopalgia, histaminic headache.