Suggest Remedy For Chronic Itchy Skin Rash Over Chest, Back And Waist

Hello - My 80 y-o Husband has been suffering from a continuous outbreak of Pimples/Rash on his chest, back, underarms, waist, and inner thighs for over 2 months which is very itchy at times, but no pain (thus his PCP says it is not shingles although it has a similar appearance). He had taken Prednisone for only 6 days, and things seemed better, then started up again. The prescribed Topical Cortisone Cream does not seem to be helping. I have been hearing all kinds of suggestions like Scabbies, some type of Eczema, etc. Because my husband does not care to visit doctors often at this stage in his life, he is willing to put up with the itching. Please share your thoughts/advice. Sincerely, Mrs. John E. of Brick, NJ.