If you ever had a tension headache, you know it can put a damper on your day. This kind of headache usually develops in the afternoon, causing mild or moderate pain that may feel like dull tightness or a band of pressure. Tension headaches occur when neck, shoulder, and scalp muscles become tense. Some people experience tension headaches from time to time; others get them more often. While a tension headache is rarely debilitating, it can certainly make life miserable.