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What causes auras in silent migraines?

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Auras appear to be a case of overstimulation of the nerve cells, followed by a drop-off of activity in the brain. That drop often travels from the visual part of the brain (occipital lobe) to the body sensation part of the brain (parietal lobe) to the hearing part of the brain (temporal lobe). This mirrors the visual, sensation, and hearing symptoms common to migraine.

SOURCES:

National Headache Foundation: "Headache - Frequently Asked Questions."

National Library of Medicine: "Migraine with Aura."

Migraine Research Foundation: "About Migraine."

eMedicine.com: "Pathophysiology and Treatment of Migraine and Related Headache."

National Institute of Neurological Disorders and Stroke: "21st Century Prevention and Management of Migraine Headaches."

News release, FDA.

Reviewed by Jennifer Robinson on January 23, 2020

SOURCES:

National Headache Foundation: "Headache - Frequently Asked Questions."

National Library of Medicine: "Migraine with Aura."

Migraine Research Foundation: "About Migraine."

eMedicine.com: "Pathophysiology and Treatment of Migraine and Related Headache."

National Institute of Neurological Disorders and Stroke: "21st Century Prevention and Management of Migraine Headaches."

News release, FDA.

Reviewed by Jennifer Robinson on January 23, 2020

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What triggers silent migraines?

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