Tension type headache : TTH is regarded as an extremely common headache in the general medicine, and TTH is diagnosed in most by the headache not to be caused by alcohol and the common cold that are not serious.
TTH is the most common headaches in a primary headache statistically, but the prevalence greatly varies by an investigation.
Chronic TTH surely greatly reduce quality of life and are serious disease to cause severe disorder so that the comment of the tension–type headache in ICHD–3 beta has it. In addition, frequent episodic TTH will be to have possibilities to affect as the treatment with a sometimes expensive drug is required.
However, Infrequent episodic TTH occurs in all most population, and when effect to give to an individual is very few things namely a physiological response.
I would like to describe a personal opinion about the way of a diagnosis of TTH in ICHD–3 beta and the classification.
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