进修医生:请问教授过敏性紫癜的病因是什么? 教授:过敏性紫癜是一种血管变态反应性出血性疾病。本病是机体对某些物质发生变态反应,引起广泛性小血管炎,使小动脉和毛细血管通透性和脆性增高,伴渗出性出血和水肿。本病的病因,多数病例难以肯定,下列因素可能与致病有关。①感染:a.细菌:β-溶血性链球菌、金黄色葡萄球菌、肺炎球菌、结核杆菌;b.病毒:风疹、水痘、麻疹、流感;c. Training Doctors: What is the cause of allergic purpura Professor? Professor: Henoch-Schonlein purpura is a vascular hemorrhagic allergic disease. The disease is the body’s allergic reaction to certain substances, causing extensive small vasculitis, the arteriolar and capillary permeability and increased fragility, with exudative bleeding and edema. The etiology of the disease, most cases difficult to be sure, the following factors may be related to pathogenic. ① infection: a. Bacteria: β-hemolytic streptococcus, Staphylococcus aureus, pneumococcus, Mycobacterium tuberculosis; b. Viruses: rubella, chicken pox, measles, influenza; c.