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What Is It?Tension headaches are the most common type of headache, affecting up to 40% of people at some time in their lives. These headaches are not caused by disease and are often considered to be "normal" headaches. Tension headaches fall into two general categories:
The exact cause of tension headaches is unknown, but there appear to be several contributing factors. Tension headaches are caused at least in part by changes in how the nerves of the head, neck and shoulders sense pain. They are also caused by changes in the brain's interpretation of the pain signals sent to the brain from the muscles in the head and neck. Emotional stress and muscular tension also probably act as triggers for these headaches in many people.
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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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