External compression headaches can occur when anything worn on your head puts continuous pressure on your forehead or scalp. They're most often experienced by athletes who use helmets, eye protection or both for sports. External compression headaches are also sometimes known by names that come from the type of equipment causing the headache. The pain of external compression headaches is often described as moderate, constant pressure. It hurts most in the area where the object is pressing on your head. As long as the headwear is in place, the pain may get progressively worse.
To prevent external compression headaches, unnecessary headwear is avoided. If protective headwear, such as a sports or construction helmet, is necessary, one should make sure it fits properly and is positioned carefully. Pain relievers are used to provide some relief. The mechanism causing external compression headache in some patients and not in others remains unknown. Although intimately related to the use of headgear for work or leisure, including hats, headsets, caps, goggles, and even surgical frontal lux devices, external compression headache may be misdiagnosed.