It's strange that headaches even exist if you think about it. The brain itself can't feel pain, so what gives? Experts now think surrounding tissues, brain chemicals, blood vessels, and nerves produce the pain signals.
"We know a lot more than we did 20 years ago about what causes headaches," says Dr. Charles Flippen, associate professor of neurology at the David Geffen School of Medicine at UCLA. "We know what areas of the brain are generating pain, but we don't have the whole picture."
From our friends at Health.com, here are 14 types of headaches, their causes, and more importantly - how to make them go away.