Most of us know the unpleasantness of a sore neck, a stiff back, or an achy muscle. And we know that awful feeling that comes with not getting a good night's rest. Most problems go away after a few days, but if you have fibromyalgia syndrome (FMS), the pain and fatigue don't go away so easily. With fibromyalgia, these symptoms persist, often for years. For some, the pain can be life altering.