Fibromyalgia (FMS) is a condition of sore muscles and increased sensitivity to pain. The ‘official’ definition requires that at least 11 of 18 designated tender point sites be especially sensitive to pressure induced pain. Other conditions must be excluded as the primary cause of pain, for example, osteoarthritis, disc disease, Lyme disease, and low thyroid.With severe Fibromyalgia (FMS), many people develop symptoms in addition to general pain. These include cognitive or concentration difficulties, chronic fatigue, joint aches, poor sleep, or headache. Secondary depression and/or anxiety affect many, but not all. People with moderate to severe Chronic Fatigue Syndrome (CFS) often develop a similar range of symptoms.