Diaper rash is something most parents see once or twice during the early years of a child's life. It is a form of dermatitis that presents as red, bumpy sores on the genitals, and can be associated with moist diapers. Open blisters indicate an acute condition that may be infected. It may also be the irritation is not from a wet diaper. Any rash severe enough to have open areas should be evaluated by a pediatrician.
Pat down the genital area with a clean, dry towel.
Apply an over-the-counter ointment containing zinc oxide. Rub the ointment over the entire genital area even areas that have no rash, but avoid the open blisters. Talk to your doctor about treating the open areas. Your pediatrician may want you to use an antibiotic ointment or cream on open blisters.
Lay the baby on an open diaper when she is napping. This means do not use the tabs to secure the diaper. This allows air to reach the genital area and keep it dry.
Change the baby's diapers to ones that are one size bigger than the ones you currently use. This provides more air flow to the genital area and allows for healing.