Pleurisy.

Synonym.—Pleuritis.

Definition.—An inflammation, either local or general, of the pleural membrane.

Varieties.—Pleurisy has been classified according to its etiological, pathological, and clinical phases, thus: Etiologically, into primary and secondary, tubercular, carcinomatous, septic, traumatic, etc.; pathologically, into circumscribed and diffuse, dry, plastic, or fibrinous, serofibrinous, purulent, and hemorrhagic; clinically, into acute and chronic.