炎症性肠病的合并症甚多,有局部并发症(肠瘘、肛门病变、肠梗阻、肠狭窄、肠穿孔、癌变、消化道出血、中毒性巨结肠、假息肉、阑尾炎、脓肿、腹膜炎、小肠吸收不良综合征等),周身并发症(关节炎、皮肤粘膜病损、眼损害、肝胆系统病、心肌脂肪变性、泌尿系病变、口腔溃疡等)。一些合并症可以为炎症性肠病的诊断提供有益的线索,有些可直接 Inflammatory bowel disease complications, there are local complications (intestinal fistula, anal lesions, intestinal obstruction, intestinal stenosis, intestinal perforation, cancer, gastrointestinal bleeding, toxic megacolon, false polyps, appendicitis, abscess, peritonitis, Small intestine malabsorption syndrome, etc.), systemic complications (arthritis, mucocutaneous lesions, ocular lesions, hepatobiliary diseases, myocardial steatosis, urological diseases, oral ulcers, etc.). Some comorbidities can provide useful clues for the diagnosis of inflammatory bowel disease, some can be direct