encephalitis

(en-sef-al-i'(e')tis) [G. enkephalos, brain, + -it is.\ Inflammation of the brain. e. cortical'is, a chronic e. involving the cortex only, due usually, if not always, to arteriosclerosis, e. epidem'ica, c. lethargic a, influenzal e., nona. e. hsemorrhag'ica, Struempell type, Leichtenstem type, e. of apoplectiform character due to blood extravasation, e. hyperplas'tic a, Hayem type of acute non suppurating e. e. lethar'gica, nona, a form occurring epidemically, often apparently in a ociation with influenza, marked by apathy, somnolence, diplopia, and extreme muscular weakne , e. neon a to'rum, encephalitis of the newborn, described by Virchow as marked by the presence of numbers of fat-laden cells in the brain, e. pyogen'ica, suppurative or purulent c, a form marked by the occurrence of numerous miliary absce es and minute blood extravasations in the brain substance, e. subcortical'is, a chronic form affecting chiefly the subcortical structure, a ociated with arteriosclerosis, infiuen'zal e., e. lethargic a.