Tension headaches are the most common form of headaches. In fact, nearly half of the adult population suffers from some level of tension headache every month. Even more alarming perhaps is that one in 30 adults are diagnosed with chronic headaches that continue for three to six months. In these cases, the sufferers have to bear the pain for at least 15 days during those months. https://www.advancedheadachecenter.com/headaches/tension-headaches