I am a 79 yr. old female, 5' 5", 153 lbs. and good health. However, I recently spent time wearing adult diapers following complicated hip surgery. Could not always have legs separated for air flow and it was warm, moist, dark place. The elastic leg band was irritating and when I checked it more thoroughly, found the inner thigh on both legs had a dark, port-wine stained area that resembled a diaper rash my child once had. After much flushing with water from showers, and use of skin protective cream, it appears lighter. Is it something serious I should address?