Head

(hed). The anterior or upper part of the body. That part of the body containing the brain or central nerve-system. Also, the upper end of a long bone, as the femur. H.-ache, any pain in the head, general or local, arising from any cause whatever. According to Hugh lings-Jackson, frontal headaches, such as " sick " and "bilious ' ' headaches, are due to disorders of the digestive system; headache at the vertex, to cerebral troubles; and occipital headache, to anemia. Eye-strain is a frequent source of headache, especially in the frontal region. H. -breeze, Electro-therapeutic, a device for general static cephalic electrization by a head-plate, with numerous insulated pencils for subdividing and accumulating strong currents, and giving more gradual effects. See Static Breeze. H. -birth, the birth of the fetal head first. H.-drop, a peculiar nervous disease seen in Japan during the spring and early summer, supposed to be miasmatic in origin. It is attended with inability to hold the head erect, paralytic symptoms in the limbs, and optic disorders. One attack predisposes to others. H.-fold, an inflection or tucking-in of the layers in front of and beneath the head of the embryo. H.-gut. See Fore-gut. H. -kidney. Same as Pronephros. H. -light Oil. See Burning Oil. H. -locking, a term in obstetrics denoting the entanglement of the heads of twins at the time of birth. H. -measurements. See Cranioi?ietry.