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Why are electroencephalogram tests (EEG) used to test for headaches?

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EEGs are not a standard part of a headache exam. But your doctor may order one to look for signs of seizures, which can cause symptoms similar to those of migraines or other types of headaches. Some people also have seizures with their headaches.

SOURCE: National Migraine Association.

Reviewed by Stephen D. Silberstein on July 17, 2017

SOURCE: National Migraine Association.

Reviewed by Stephen D. Silberstein on July 17, 2017

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How effective is an electroencephalogram test (EEG) in diagnosing a headache?

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