Backgrounds Henoch-Schonlein purpura (HSP), termed as Henoch-Schonlein purpura nephritis (HSPN) when a renal lesion was found, is the most common systemic vacuities affecting children with whose pathogenesis remaining poorly understood as yet.

• 研究背景 过敏性紫癜(Henoch-Sch(?) nlein purpura，HSP)是以微小血管炎为主要病变的系统性血管炎。