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Written by the OrganizedWisdom Team with as the reviewer. All original content is supervised by the The OrganizedWisdom Medical Review Team
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Overview: The International Headache Society (IHS) began developing a classification system for headaches in 1985. Finalized in 1988, this system includes a tension-type headache category, further defined as either episodic or chronic. Headache categories also are defined ...
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