Colonoscopy showed erythema of areas of colon- biopsies done and nothing found is this the sign of autoimmune like scleroderma? i know it affectsbowel

Not your answer: I would draw no conclusion whatever beyond that no findings on biopsy is generally good news. Erythema is redness and generally means nothing. Scleroderma won't announce itself in the colon, though it can affect the gut later. If you are concerned and you have the specific changes (generally in the hands) that warn of it, the person to discuss this with is your physician.