K.M.
just ride the ride, my son had GI tract infections (what it sounds like to me) ALL the time it was craziness. My dr told me that the BRAT diet vs going back to regular food there has been no proven reults for a difference so we were just smart about going with the more mild choices but did not focus on BRAT diet per sey. I did however double diaper some days, his actual size and then the next size up over that. Really, I would suggest to give frequent baking soda baths to keep tushy smooth and clean and should a rash appear my suggestion is to use Mylanta (unflavored) apply to area with cotton then put cream/vaseline whatever you have over the mylanta to get rid of the rash quickly. We had these nearly once every two months sometimes more often (immune issue) so really all you can do is ride it out and keep baby hydrated and with a clean comfy tushie.