Is this a skin rash or what?

I have an older friend who has went through menopause but still wears a maxi pad all the time due to bladder leakage. She started to develop a skin rash that is red and itchy soon after she started wearing the pads. It has started to spread to different areas of her body. Her primary doctor and a dermatologist has told her that it is only that she is allergic to fleas. She is very concerned about this and doesn't know what to do. Any help is appreciated.