<Tr> <Th> ICD - 10 </Th> <Td> G44. 801 </Td> </Tr> <Tr> <Td_colspan="2"> (edit on Wikidata) </Td> </Tr> <P> External Compression Headache is caused by any type of headwear . This includes headwear that places pressure on the head--including tight hats, helmets, headbands, headphones and goggles . It is not known why some people are more sensitive than others to this type of pressure . External compression headaches can affect anyone who uses headwear . The headaches are more common among people who have migraines . It is believed to affect about four percent of the population . It is also referred to as "swim goggle headache". </P> <P> These headaches can be brought on by such innocuous sources as wearing a halter top (presses against the neck), earplugs (presses against the jaw and inner ear), or wearing even a tiny hair clip (compresses the scalp). There is no known preventative treatment except to avoid the offending trigger . However, once symptoms arise and the trigger is removed, "Triptan" - type migraine treatment is effective . </P>

Can a tight hat give you a headache