What causes streptococcal necrosis?
summary
Streptococcal necrosis is caused by β- Hemolytic streptococcus is an acute suppurative disease caused by infection and characterized by flaky skin necrosis, so it is also called acute streptococcal skin necrosis. β- Streptococcus haemolyticus has strong pathogenicity. It can produce hemolysin in the culture medium and make a wide and transparent hemolytic ring appear around the colony. Invasion of the human body can quickly destroy local tissue, spread around. Entering the blood can cause hemolytic reaction.
What causes streptococcal necrosis?
β- Hemolytic streptococcus invades the skin, releases hyaluronidase, dissolves the stroma of skin cells, and bacteria propagate and spread rapidly in skin tissue. The destruction of small blood vessels, red blood cell exudation and small thrombosis further aggravate the damage of skin cells, resulting in blisters, serous exudation and massive necrosis of skin tissue β- Streptococcus haemolyticus; Skin appendages and sensory nerve endings may also be damaged. After a few days, the necrotic tissue dried up and blackened, forming a eschar similar to burn. Two to three weeks later, the necrotic skin cells fell off and ulcerated. The full-thickness defect of ulcer epidermis may be accompanied by partial dermis or even subcutaneous fat defect, and the edge of ulcer sneaks.
Streptococcus necrosis can cause fatigue, sensory disturbance, ulcer, chills, fever, subcutaneous tissue edema and other conditions, and can cause systemic symptoms. This is because of the role of bacterial diffusion factor. The best choice for Streptococcus necrosis is surgical treatment. However, large doses of antibiotics should be used for preparatory treatment before surgical treatment, and patients should stay in bed more after treatment, Strengthen nutrition.
Discrimination; Cellulitis has a clear history of trauma or skin infection in other parts; Infection occurred in subcutaneous, fascial, muscle space or deep loose connective tissue, less blisters and necrotic eschar, pus has stench. Erysipelas are β The infection caused by hemolytic streptococcus invading the lymphatic network, local skin with rose spots, accompanied by proximal lymph node enlargement, the boundary between the infected area and normal tissue is clear, less suppurative. Clostridium muscular necrosis has a history of deep tissue damage. The pathogenic bacteria is Clostridium anaerogenes. Therefore, the swollen subcutaneous tissue contains a lot of gas, and the pus has a stench.
matters needing attention
The infection of mucous membrane, skin, soft tissue and upper respiratory tract should be avoided, especially the treatment of local wound and postoperative wound; It is advisable to find out the infected foci as soon as possible and use appropriate antibiotics for treatment. During menstruation, women should avoid using tampons with high adsorption capacity, use tampons with low adsorption capacity, change them every 4-6 hours, and use sanitary napkins as much as possible. Wash hands before and after changing tampons. Keep sanitary napkins and tampons in a dry place instead of in a cool and humid bathroom. Don't put two tampons at a time. Replace the tampons before going to bed.
