cluster headache clus·ter headache (klŭs'tər)
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.
|cluster headache (klŭs'tər) Pronunciation Key
A recurring headache, most common in males, characterized by severe pain in one eye or the adjacent temple, watering of the eye, and runny nose.