Fungal infections of the diaper area are most common in babies under 6 months of age and in people being treated with antibiotics. Signs of a diaper rash caused by a fungal infection include:

• A fiery red rash, mainly in the skin creases, with well-defined borders and tiny red or pus-filled pimples outside the inflamed border.
• A rash in other skin folds, such as the neck, underarms, or belly button.
• White patches in the mouth that looks like milk curds.
• White discharge from the vagina.

A fungal diaper rash is not a serious problem, but it may need to be treated with a nonprescription antifungal cream or ointment. Do not use an adult medicines for fungal and yeast infections on babies and children unless you are told to do so by your doctor. Medicines for babies and children can be used safely on adults.

A caregiver who has a vaginal yeast infection can pass the infection to others if proper hand-washing techniques are not followed.