A: Sometimes. Using a new formula or introducing new foods can change the consistency of your baby's stool, which can result in a red, splotchy rash on his bottom. Some babies are more sensitive to these changes than others. Changing your baby's diaper promptly, giving him plenty of naked, diaper-free play time, and slathering his bottom with diaper cream after diaper changes can help it heal more quickly or prevent it in the first place. A mild diaper rash is totally normal, but shouldn't last more than a few days. If you notice the rash becoming blistered or lasting longer than five days, talk to your pediatrician. Sometimes, it can progress into a yeast infection, which is easy to treat, but may require a prescription cream.
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