本病系内服抗生素后突然发生的出血性结肠炎,预后良好。本病病因抗生素有80％以上属于合成青霉素类,此外还有头孢菌素类、大环内酯族、四环素族等多种。有人认为其发病原因为服用抗生素后,大肠细菌丛发生变化,异常细菌增加,产生毒素;也有人根据药物对淋巴细胞刺激试验常为阳性,认为多数患者具有变态反应因素。 The disease is a sudden onset of hemorrhagic colitis after oral antibiotics, the prognosis is good. The disease causes more than 80% of antibiotics are synthetic penicillins, in addition to cephalosporins, macrolides, tetracycline and other species. Some people think that the reason for their pathogenesis after taking antibiotics, changes in the bacterial flora of the large intestine, abnormal bacteria increased toxin production; some people are often positive for lymphocyte stimulation test based on drugs, that most patients with allergic reactions.