My stoma is coated brown. I called my stoma nurse, but she didn't seem to be too concerned. Said it was probably a "fluff" and she could probably just scrape it off. It has spread and is now covering the complete stoma. I tried washing it but it wouldn't come off. I have a great concern and would like to know if anyone else has had this experience and knows of the cause. I just had my surgery on the 16th of August and still healing, so I do have a lot of pain. Not sure if that is due to the surgery or due to something going wrong with my stoma.