When my son would have a yeast infection I would wipe it down like a normal diaper rash and the skin would peel off. I felt so freakin bad. It didnt seem to hurt him though like a normal diaper rash would. It kinda looked like little blistery spots.
if you think its yeast you can get the miconazole that walmart sells or wherever. when my son got bad rashes i usually mixed a&d (yellow kind) with triple antibiotic ointment put it on and covered it with baby powder & it would clear it right up.