Some of that blame may be valid. More than two dozen types of headaches have been identified by experts including pain related to diet, stress, heredity and personality traits. It may feel as if your hat's too small when you aren't wearing one. Beginning treatment as soon as you feel the headache developing, in most cases, keeps the discomfort on the low end of the pain range. Muscles in your head, and muscles in your neck and shoulders that attach to those reaching up over your head, squeeze down tight putting grief on nerves and blood vessels.
Tension headaches are nothing more than a nuisance.
The chance of one can be reduced by maintaining a fair to middling level of physical fitness, making sure your pack fits well and rides comfortably, and talking a companion into carrying the heaviest gear. Since you'll sometimes wake up with a tension headache when you sleep uncomfortably, adequate sleeping pads and a flat tent site can be of benefit in prevention.