What am am wondering is this...Because of certain physical symptoms i show, my doc seems to think there is a chance that something autoimmune is going on i.e. Lupis or rhuematoid arthritis. He gave me the prednisone because it is his belief that if it does work that I don't have FM and do have something autoimmune. My question is can prednisone help someone with FM or does the fact that it is working mean that I have something else??