过敏性紫癜又称亨-舒综合征(HSP),是以小血管炎为主要病变的系统性血管炎,临床特点为血小板不减少性紫癜。常伴关节肿痛、腹痛、便血、血尿和蛋白尿。多发生于2～8岁儿童,男孩多于女孩,一年四季均有发病,以春秋季居多。临床表现多为急性起病,各种症状可以不同组合,出现先后不一 Allergic purpura, also known as Hang - Shu Syndrome (HSP), is a small vasculitis as the main lesion of systemic vasculitis, clinical features of platelet does not reduce purpura. Often accompanied by joint swelling and pain, abdominal pain, blood in the stool, hematuria and proteinuria. Occurred in children 2 to 8 years old, more boys than girls, all year round incidence, mostly in spring and autumn. Most clinical manifestations of acute onset, various symptoms can be different combinations, there have been different