Headache, hed'ake, a pain in any part of the head, excepting the face. It is a symptom of disease, the seat of which, however, may be far from the location of the pain; as, for instance, a disordered stomach may produce pain in the forehead; neurasthenia may cause pain at the base of the brain, while a general headache may be produced by an unhealthy liver. The treatment of headache should be governed entirely by the cause, when it is possible to ascertain it. The practice of taking anodynes to cure a head ache is unreasonable, and it is the cause of much suffering, as in many cases it tends to create a pernicious habit. Most of the drugs are poisonous, and some of them, in certain conditions of the organs, are fatally so. In cases of chronic headache, a physician should be consulted in an effort to ascertain the cause, but acute attacks may generally be relieved by rest, lying down in a darkened room, and by careful diet.