I am 61 and have similar for 12 months and i have tried gluten free diet along with minerals, vitamins etc- didnt work. Its coming from within - perhaps deep stuff - try kinesiology - that will find the source and you can go from there. At least you will stop chasing new cures and endless practitioners.
Yours. Itch in common
From the symptoms it can be eczema skin, atopic dermatitis or psoriasis. Although steroids, are commonly used for the treatment of atopic dermatitis, there are certain other agents also which are used like immune modulator drugs e.g. tacrolimus. These are available in the form of ointments and tend to prevent the recurrence. You can discuss with your dermatologist regarding the right use.
There are certain other non-pharmacological measures which are equally important in treating atopic dermatitis. These are Lubricating the skin frequently, avoiding harsh soaps and cleansers, preventing scratching or rubbing whenever possible, protecting skin from excessive moisture, irritants, and rough clothing, maintaining a cool, stable temperature and consistent humidity levels, limiting exposure to dust, cigarette smoke, pollens, and animal dander & Recognizing and limiting emotional stress. I sincerely hope that helps. Take care.