Fibromyalgia Syndrome (FMS) is a musculoskeletal illness (which causes chronic pain) and a chronic fatigue disorder. It can also change sleep patterns and cause the following: digestive disorders, chronic headaches, painful menstrual periods, temperature sensitivity, morning stiffness, numbness or tingling of extremities, and even cognitive memory problems. The name fibromyalgia comes from "fibro" in Latin meaning tissue, "my" in Greek meaning muscle, and "algia" (also Greek) meaning pain.(source 5)

Because symptoms are wide - ranged and studies for treatment of FMS did not begin until the 1980's, it is one of the most popularly misdiagnosed conditions in the medical world. The main symptoms are widespread pain and fatigue as well as tender points on the body. The muscular pain often may feel like a pulled muscle and may burn or twitch. (Source 3)

Fibromyalgia seems to affect mostly women, although men and children can also get it. It is...