克罗恩病(CD)和溃疡性结肠炎(UC)都属于炎症性肠病(IBD)。IBD肠外表现的病因可能涉及到多种因素,有时候IBD的肠外表现(IBD本身累及其他器官)与IBD继发的肠外并发症(如营养不良、慢性炎症、药物的不良反应等所致)比较难鉴别。一般而言,IBD的肠外表现与IBD的活动性一致,但有些可能与IBD的活动性不一样,例如原发性硬化性胆管炎和强直性脊柱炎。这些肠外表现的症状可 Both Crohn’s disease (CD) and ulcerative colitis (UC) are inflammatory bowel disease (IBD). The cause of IBD’s parenteral manifestations may involve a variety of factors, sometimes IBD’s extraintestinal manifestations (IBD itself involving other organs) and IBD secondary to complications of parenteral (such as malnutrition, chronic inflammation, adverse drug reactions To) more difficult to identify. In general, IBD’s parenteral presentation is consistent with IBD activity, but some may differ from IBD activity, such as primary sclerosing cholangitis and ankylosing spondylitis. These symptoms of parenteral manifestations can be