By Teri Robert, MyMigraineConnection Lead Expert
This article has been updated. Please see Tension-Type Headache - The Basics Updated.
Tension-type headaches (TTH) are the most common form of headache. According to the World Health Organization and International Headache Society, up to 78% of the population experiences this type of headache, and 60% of TTH sufferers experience reductions in social activity and work capacity.
Tension-type headaches have been called by various names over the years including Tension headache, muscle contraction headache, psychomyogenic headache, stress headache, ordinary headache, essential headache, idiopathic headache and psychogenic headache. Of those names, only "tension headaches" is still fairly frequently used.