I have had the same "ass"inine problem for a while now. I tried everything. The only thing that I found was rubbing my rear with a wash rag with vinegar on it once a day after showering. I virtually have no problems now. But if I go 2 or more days without... it starts again, and takes a couple more days to heal. It's the only thing that has worked for me. It works. Thanks. Hope that this helps. Good luck.