过敏性紫癜(HSP)是以皮肤瘀点、瘀斑为主,累及黏膜、关节及内脏为特征的出血性疾病。1994年在美国召开系统性血管炎命名及分类的国际会议上将本病划分为血管炎范畴,属血管变应性疾病。近年来有许多学者对本病进行大量研究,现将相关研究进展综述如下。一、病因HSP的确切病因仍不 Henoch-Schonlein purpura (HSP) is a hemorrhagic disease characterized by skin petechia and ecchymosis, involving mucosa, joints and internal organs. In 1994 in the United States held a systematic meeting named and classification of vasculitis will be classified as vasculitis disease, is a vascular allergic disease. In recent years, many scholars have conducted a great deal of research on the disease, and the related research progress is summarized as follows. First, the exact cause of HSP is still not the cause