8A81.2 Chronic tension-type headache

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01


A disorder evolving from frequent episodic tension-type headache, with daily or very frequent episodes of headache, typically bilateral, pressing or tightening in quality and of mild to moderate intensity, lasting hours to days, or unremitting. The pain does not worsen with routine physical activity, but may be associated with mild nausea, photophobia or phonophobia.

postcoordination

Add Stem and/or Extension codes to form a cluster code which adds detail to the condition.

synonyms

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