Ïã½¹ÊÓƵ Guideline
Section 1: The Clinical Approach
Section 2: Primary Headaches
2.3 Tension-type headache
2.3.1 Epidemiology
Tension-Type Headache (TTH) is the most common primary headache disorder with a mean global lifetime prevalence of 42% (Range 19-83%) (). Chronic tension-type headache affects 0.5 - 4.8 % of the worldwide population ().