My mother is 88 years old. She has had a rash, which she did not inform me of until it became extremely uncomfortable, left scabs from scratching, progressing into welts in places, very irritating, scratching herself terribly, both night, and day. At first the doctor treated it as if it was eczema. Prescribing Hydrocortisone cream. That was not effective. The second TX was steroids and Hydroxyzine. Still ineffective. Please advise.