Migraine Headaches

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Migraine attacks are recurrent, moderate-to-severe episodes of head pain that may be induced by a variety of triggers.

• Migraine headaches occur as the result of an electrochemical imbalance in the brain that causes successive narrowing (constriction) of blood vessels followed by expansion (dilation) of blood vessels.
• Nerves surrounding the blood vessels respond by releasing chemicals that induce inflammation.
• This inflammation is ultimately responsible for the pain that is experienced during the migraine attack.
• The narrowing of arteries diminishes the blood supply to portions of the brain, which may explain sensations related to migraines, such as visual disturbances, numbness, tingling, weakness, or brief paralysis.
• A migraine headache is primary headache pain, and no evidence of secondary headache is suspected.