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Sorry to hear about this affliction. How long have you had it? Can you upload a picture or two?
Have you noticed any swelling in the legs or feet? Are you diabetic?
The appearance is consistent with a non-specific dermatitis, possibly from poor circulation in the feet. You should be evaluated for this as it is usually treatable. There may also be a component of cellulitis (infection) under the surface which is keeping the inflammation and symptoms going. A short course of antibiotics with coverage against staph and strep may be very helpful in clearing this up. In the meantime, try to avoid hot water and drying soaps which can exacerbate the rash. Double rinse your socks as a residue of laundry detergent may be irritating the skin and breaking down the top-most layer.