Ulcerative colitis and the skin.
D003093:Colitis, Ulcerative / Q000150:complications*; D004893:Erythema Nodosum / Q000209:etiology; D006801:Humans; D011711:Pyoderma / Q000209:etiology; D012871:Skin Diseases / Q000209:etiology*; D013927:Thrombosis / Q000209:etiology; D014657:Vasculitis / Q000209:etiology