headache

(hedfak). Cephalalgia, a diffuse pain in ^ various parts of the head, not confined to the area of distribution of any nerve, bil'ious h., sick h., migraine, blind h., migraine, hel'met h., pre ure pain felt in the upper half of the head, occurring especially in neurasthenia, in'durative h., nodular h. nod'ular h., radiating pain in the head accompanied by nodular swellings in the splenius, frontal is, trapezius, and other muscles, organ'ic h., h. due to disease of the brain or its membranes, re'flex h., h. due to disease or abnormality in some organ more or le distant from the brain; one due to eyestrain, for example, sick h., migraine, symptom at'ic hi, reflex h.