cluster headache

American  

noun

Pathology.

1. 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.

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cluster headache Scientific  

/ klŭs′tər /

1. 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.

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Etymology

Origin of cluster headache

First recorded in 1950–55