Cause of headaches
From DrKoop's partner site on migraine, MyMigraineConnection.com
Cluster headaches may be caused by blood vessel dilation in the eye area. Inflammation of nearby nerves may give rise to the distinctive stabbing, throbbing pain usually felt in one eye. The trigeminal nerves branch off the brainstem behind the eyes and send impulses throughout the cranium and face.
Review Date: 09/28/2005  advertisement
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