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Cluster headaches

Cluster headaches are recurring headaches that occur in groups or cycles. The headaches appear suddenly and cause severe, debilitating pain on one side of the head, along with a watery eye and nasal congestion on the affected side of the head.

The cause of cluster headaches is unknown. Although there is no cure for cluster headaches, medications can reduce the frequency and duration of the painful headaches.

Author Monica Rhodes
Editor Kathleen M. Ariss, MS
Associate Editor Pat Truman
Primary Medical Reviewer Anne C. Poinier, MD
- Internal Medicine
Specialist Medical Reviewer Colin Chalk, MD, CM, FRCPC
- Neurology
Last Updated April 21, 2006

WebMD Medical Reference from Healthwise

Last Updated: April 21, 2006
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