A tension headache is the most common type of headache. It can cause mild, moderate, or intense pain in your head, neck, and behind your eyes. Some patients say that a tension headache feels like a tight band around their forehead. The majority of people who suffer from tension headaches have episodic headaches, which occur one or two times per month on average. However, tension headaches can also be chronic. According to the Cleveland Clinic, chronic headaches affect about 3 percent of the U.S. population and include headache episodes that last for more than 15 days per month. Women are twice as likely to suffer from tension headaches as men.