过敏性紫癜是一种补体正常,血小板不减少的广泛性血管炎症。其特征是皮肤紫癜、四肢浮肿、关节肿胀、腹部疼痛和胃肠道出血及肾脏病变。病因和发病机理目前仍不十分清楚,一般认为与过敏及感染等有关。在临床上诊断一般并不困难,但对于内脏损害先于皮肤紫癜的病例,易误诊为急腹症、肠蛔虫症、胃肠炎、细菌性痢疾等。为了提高对本病的认识,现将我们近期遇到的2例过敏性紫癜误诊为急性出血性小肠炎的病例报告如下。 Henoch-Schonlein Purpura is a generalized vascular inflammation with normal complement and no reduction in platelets. It is characterized by skin purpura, swollen limbs, swollen joints, abdominal pain and gastrointestinal bleeding and kidney disease. Etiology and pathogenesis is still not very clear, generally considered to be related to allergies and infections. In clinical diagnosis is generally not difficult, but for visceral lesions before the skin purpura cases, easily misdiagnosed as acute abdomen, intestinal roundworm, gastroenteritis, bacterial dysentery and so on. In order to improve the understanding of the disease, now we recently encountered 2 cases of allergic purpura misdiagnosed as acute hemorrhagic enteritis cases are as follows.