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What is the neurological cause of a cluster headache?

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You get a cluster headache when a specific nerve pathway in the base of your brain is activated. That signal seems to come from a deeper part of the brain called the hypothalamus, where the "internal biological clock" that controls your sleep and wake cycles lives.

The nerve that's affected, the trigeminal nerve, is responsible for sensations such as heat or pain in your face. It's near your eye, and it branches up to your forehead, across your cheek, down your jaw line, and above your ear on the same side, too.

An underlying brain condition, such as a tumor or an aneurysm, won't cause these headaches.

From: Cluster Headaches WebMD Medical Reference

SOURCE: 

Mayo Clinic.

Reviewed by Melinda Ratini on September 9, 2018

SOURCE: 

Mayo Clinic.

Reviewed by Melinda Ratini on September 9, 2018

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