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1.
A rash found on a baby's bottom. The result of wet or dirty diapers being worn for extended periods of time, without being changed. Bulky or thickly padded diapers rubbing against a baby's tender bottom, inducing irritation, otherwise known as diaper rash. A red, sore, swollen, pimple like rash on a baby's bottom.
The baby's diaper rash was confined to the elasticized openings of the rubber pants.

Babies who wear cloth diapers suffer less occurances of diaper rash, compared to babies who wear disposable diapers.

Babies in the daycare centre sometimes got diaper rash from wearing rubber pants outside on a hot day.
by Lorraine Jorgenson. August 27, 2006