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By Mayo Clinic staffDiaper rash is characterized by the following:
- Skin symptoms. Diaper rash is marked by red, puffy and tender skin in the diaper region — buttocks, thighs and genitals.
- Changes in your baby's disposition. You may notice your baby seems more uncomfortable than usual, especially during diaper changes. A baby with a diaper rash often fusses or cries when the diaper area is washed or touched.
Diaper rashes can occur intermittently, anytime while your child wears diapers, but they're more common in babies during their first 15 months, especially between 8 and 10 months of age.