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What is familial hemiplegic migraine?

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Familial hemiplegic migraine is a rare type of migraine with an aura that includes muscle weakness. During the attack, people with this form of migraine have trouble moving their bodies. The severity can range from muscle weakness to a total inability to move. The muscle weakness is fully reversible.

This type of migraine is often mistaken for epilepsy. People may feel confused during these attacks.

The episodes of muscle weakness and movement abnormalities can last for hours or days. In some cases, people can become comatose during the migraine.

Familial hemiplegic migraine can run in families. In patients with familial hemiplegic migraine, at least one first- or second-degree relative may have this type of migraine. Experts have linked the disorder to a number of genetic mutations.

SOURCES:

International Headache Society: "Familial Hemiplegic Migraine (FHM)."

Dorland's Illustrated Medical Dictionary , 30th edition.

Bradley's Neurology in Clinical Practice , 6th edition.

Kirchmann, M. March 2006. Neurology,

American Headache Society: "Photosensitivity and the Headache Patient."

Sun-Edelstein, C. June 2009. Clinical Journal of Pain,

National Institute on Deafness and Other Communication Disorders: "Glossary."

UpToDate.

Reviewed by Stephen D. Silberstein on July 17, 2017

SOURCES:

International Headache Society: "Familial Hemiplegic Migraine (FHM)."

Dorland's Illustrated Medical Dictionary , 30th edition.

Bradley's Neurology in Clinical Practice , 6th edition.

Kirchmann, M. March 2006. Neurology,

American Headache Society: "Photosensitivity and the Headache Patient."

Sun-Edelstein, C. June 2009. Clinical Journal of Pain,

National Institute on Deafness and Other Communication Disorders: "Glossary."

UpToDate.

Reviewed by Stephen D. Silberstein on July 17, 2017

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