过敏性紫癜(Henoch schonlein purpura.HSP)又称出血性毛细血管中毒症或许兰-亨诺紫癜,是一种以全身过敏性毛细血管和细小血管炎为主要病理损害的自身免疫性疾病。病变主要累及皮肤、胃肠道、关节和肾脏等组织器官,产生紫癜、血尿、腹疼、胃肠道出血和关节炎等表现,临床较常见 Henoch schonlein purpura (HSP), also known as hemorrhagic capillary thrombosis, or Lan-Henoch Purpura, is an autoimmune disease characterized by systemic allergic capillaries and vasculitis as the main pathological lesions. Lesions mainly involving the skin, gastrointestinal tract, joints and kidneys and other tissues and organs, resulting in purpura, hematuria, abdominal pain, gastrointestinal bleeding and arthritis and other manifestations, the more common clinical