What Causes Recurrent Burning Sensation And Red Rashes On The Neck And Chest?

For the last year and a half, I have been suffering from a burning red rash that moves from my neck, chest, breasts, under my breasts, and rib cage. It is like I am on fire. It drys out and the skin becomes very hard and dry. I am in significant pain. It has been treated as both an allergic reaction and a strep infection of the skin. Though, the antibiotics have cleared it in the past or may help for a short period of time, it always comes back. I am also experiencing some hair loss. I have had blood work that has looked at ANA, white blood count, diabetes, strep, syphilis, lupus, pancreatic cancer, etc. All my blood work comes back normal. I am also experiencing some swelling in my left ankle.