I know this sounds weird when we're talking IBS, but I used to have one foot that peeled at the outer arch. The skin there would turn thick and yellow, crack and a big chunk of dead skin could be peeled off. I told my allergist about this, as it had started to do this around the time of my proctalgia symptoms. Strangely, after the treatment with the antifungal med for yeast, the peeling went away (along with the proctalgia). Hmmmmmmm, just thought you might want to know this, in case you get this symptom.------------------