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How does caffeine trigger a migraine?

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Getting too much caffeine (or withdrawal from it) can cause headaches when the amount present in your body abruptly drops. Blood vessels seem to get used to caffeine, and when you don’t have any, you may get a headache. Caffeine itself can be a treatment for acute migraine attacks.

From: Migraine Headaches WebMD Medical Reference

SOURCES: National Headache Foundation: "Migraine."

Stewart, W. February 1997. Annals of Neurology,

Daroff, R. Saunders, 2012. Bradley's Neurology in Clinical Practice, 6th edition,

Medical Clinics of North America, March 2009.

News release, FDA.

Reviewed by Lawrence C. Newman on May 23, 2018

SOURCES: National Headache Foundation: "Migraine."

Stewart, W. February 1997. Annals of Neurology,

Daroff, R. Saunders, 2012. Bradley's Neurology in Clinical Practice, 6th edition,

Medical Clinics of North America, March 2009.

News release, FDA.

Reviewed by Lawrence C. Newman on May 23, 2018

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How do changes in weather trigger a migraine?

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