Muscular rheumatism, may be the original name for Fibromyalgia. When I was given the FM dx in 1999 I did a lot of studying up and in the "old days" it was rheumatism....so who knows, it's all a guessing bunch of games as I have seen it in my life. If I didn't work on myself as I do, I'd be living at doc offices... not gonna happen.