Tension-type Headache (TTH) is prevalent in 24-37% of the adult population with a higher prevalence in women and represents approximately 80% of all headache diagnoses. It has significant socioeconomic costs  and reduced quality of life with the World Health Organisation (WHO) ranking primary headache as one of the top ten disability causes. According to the International Headache Society’s International Classification of Headache Disorders, TTH lasts from 30 minutes to 7 days and is characterized by bilateral pressure, tightening, or non-pulsating pain of mild to moderate intensity that is not worsened by physical exertion and photophobia and/or phonophobia occur in some cases. TTH is classified as either episodic (ETTH) or chronic […]