5 nights ago I felt an extremely painful burning in my left hand, then two nights later I felt it all over my left thigh and after taking a bath today my neck a long with my left thigh and hand started burning. I have visited the doctors, hospital and the hospital is now going to refer me to someone who can test for allergies. I have never had a allergic reaction before and I don't know what would create one. Painkillers and creams don't work and I have tried soo many.