Inflammatory bowel disease (IBD) is defined as a chronic condition characterized by unpredictable relapsing episodes of gastrointestinal inflammation. IBD is not limited to the gastrointestinal tract and should be considered a systemic disease which can involve any organ. Cutaneous manifestations in IBD are frequent and comprise a broad spectrum of diseases, ranging from mild to severe and sometimes debilitating lesions. Some of the cutaneous manifestations can present signs of an underlying intestinal disease, leading to the screening for non-detected IBD even in the absence of symptoms. Cutaneous EIMs are divided into 4 categories: i) Disease-specific lesions that show the same histopathologic findings as the underlying gastrointestinal disease, ii) reactive lesions which are inflammatory lesions that share a common pathogenetic mechanism but do not share the same pathology with the gastrointestinal disease, iii) associated conditions are more frequently observed in the context of IBD, without sharing the pathogenetic mechanism or the histopathological findings with the underlying disease and iv) drug-related skin reactions.
Keywords: biologic therapy; cutaneous manifestations; drug-related cutaneous manifestations; extraintestinal manifestations; inflammatory bowel disease.
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