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What Is It?A migraine is a very common, but very particular, type of headache. Most people who get migraines have repeated attacks of headaches that occur over many years. The typical migraine headache is throbbing or pulsating, and often is associated with nausea and changes in vision. While many migraines are severe, not all severe headaches are migraines, and some migraines can be quite mild. Up to 20% of people in the United States will experience migraine headaches at some point in life. In about half of those, migraine headaches first appear during childhood or adolescence. Two-thirds of people who get migraines are women, probably because of the influence of hormones. Migraines also tend to run in families. Despite years of research, scientists do not know exactly why migraines occur. The pain of migraines is associated with swelling in blood vessels and irritation of nerves that surround the brain. The brain chemical serotonin appears to play an important role in this process as it does in other conditions, including depression and eating disorders. A migraine is a very common, but very particular, type of headache. Most people who get migraines have repeated attacks of headaches that occur over many years. The typical migraine headache is throbbing or pulsating, and often is associated with nausea and changes in vision. While many migraines are severe, not all severe headaches are migraines, and some migraines can be quite mild. Up to 20% of people in the United States will experience migraine headaches at some point in life. In about half of those, migraine headaches first appear during childhood or adolescence. Two-thirds of people who get migraines are women, probably because of the influence of hormones. Migraines also tend to run in families. Despite years of research, scientists do not know exactly why migraines occur. The pain of migraines is associated with swelling in blood vessels and irritation of nerves that surround the brain. The brain chemical serotonin appears to play an important role in this process as it does in other conditions, including depression and eating disorders.
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From Health A-Z, Harvard Health Publications. Copyright 2007 by the President and Fellows of Harvard College. All rights reserved. Written permission is required to reproduce, in any manner, in whole or in part, the material contained herein. To make a reprint request, contact Harvard Health Publications. Used with permission of StayWell.
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