D.W.
When my son was antibiotics one time he had a bad rash. I was told by the nurse at the doctors office to make sure to give baths with baking soda and have them in there for a good ten minutes. After that,let your child air dry for a little while so air can get to their bottom. get some liquid maalox,take a cotton ball and put it around the area that has a rash. once it has dried then put on some triple paste. Also make she is eating yogurt that is probiotic like activia and yobaby by stonyfield farms. You want to make sure he digestive track is healthy. Good luck. I hope this advice will help.