R.
The best trick my pedi ever showed me was using Maalox on diaper rash... that's right antacid. it neutralizes the acid in the urine/stool so that the bacteria doesn't eat your babies skin. applying ointment like desitin, etc just traps the bacteria in that's already there even though it does prevent new bacteria from getting to the skin. With my kids' diaper rashes I always use maalox first and then put the diaper cream on top... it's visibly clearer by the next diaper change. If it's a yeast infection, the maalox won't work but you can use an athlete's foot cream like lotrimin and that'll clear it up too. I've been there, done that as well. There's another type of yeast infection that doesn't respond to lotrimin, so if that doesn't work then there's another OTC topical you can try... but I can't remember what it is because I never had to deal with that kind of infection. Hope this helps!