Hi I have a query in relation to what doctors are looking for when diagnosing IBD. In the last few months I have been experiencing diaorhea, stomach pains and have lost weight. I had a ct scan that showed inflammation of the colon and and had a colonoscopy last week. The nurse informed me that 'erythemas' was found on my colon. I am confused, and slightly concerned. Are these signs of Crohn's or colitis that are found in colonoscopy and CT?