Inflammatory bowel disease that can affect any part of GI tract. See Colitis, Colon, and Parasites programs. Also see Ileocolitis Colon Inflammation.IntestinesEncyclopedia Entry for Crohn's Disease :Crohn's Disease. Can be caused by an interaction between bacteria and fungi, and in particular between a fungus, Candida tropicalis, and two bacteria: Escherichia coli and Serratia marcescens.Information from Marcello Allegretti.