Permeability inflammation is mainly caused by the infiltration of neutrophils, fibrinogen, and serous fluid. It is mostly acute inflammation and mainly manifests as serous inflammation, fibrinous inflammation, and suppurative inflammation. Common diseases include skin surface suppuration, wound infection, lung infection, gynecological inflammation, kidney inflammation, and digestive tract inflammation. Specifically, exudative inflammation is as follows:
1. Serous inflammation is an inflammatory reaction that mainly manifests as the exudation of a large amount of fluid, mainly serum, containing various albumin, a small number of white blood cells, and desquamated epithelial cells. It often occurs in the skin, mucosa, serous membrane, and loose connective tissue. Serous inflammation is generally mild and easy to subside.
2. Suppurative inflammation refers to the inflammatory process with a large amount of neutrophil infiltration, often accompanied by varying degrees of tissue necrosis and pus formation.
3. Fibrinous inflammation mainly manifests as the exudation of a large amount of fibrin. Lesions are mostly found in the mucosa, serous membrane, and lungs. Fibrinous inflammation will exude fibrin, white blood cells, necrotic mucosal tissue, and bacteria, forming a grayish-white pseudomembrane on the mucosal surface. Therefore, mucosal fibrinous inflammation is also known as pseudomembranous inflammation.
4. Hemorrhagic inflammation occurs when the vascular walls within the inflammatory barrier are severely damaged, and the exudate contains a large number of red blood cells, leading to hemorrhagic inflammation.
