Crohn's Colitis, also known as crohn disease, is related to ileocolitis and intestinal tuberculosis, and has symptoms including diarrhea, rectal bleeding and skin lesions. An important gene associated with Crohn's Colitis is TNF (Tumor Necrosis Factor), and among its related pathways/superpathways are Innate Immune System and Cytokine Signaling in Immune system. The drugs Hydrocortisone and Hydrocortisone acetate have been mentioned in the context of this disorder. Affiliated tissues include bone marrow and colon, and related phenotypes are homeostasis/metabolism and liver/biliary system