Fibromyalgia is characterized by chronic widespread pain, fatigue and tender points in specific locations across your body. According to the Mayo Clinic, fibromyalgia affects about 2 percent of the United States population, mostly women.

Fibromyalgia, or FM, is a chronic neurological disorder characterized by a dull, aching pain throughout the body. According to MayoClinic.com, fibromyalgia is difficult to diagnose and is often mistaken for other conditions such as rheumatoid arthritis.

Fibromyalgia is a condition that causes fatigue and pronounced musculoskeletal pain all over the body. It's still not well understood. Because there are no laboratory tests that can confirm a diagnosis, medical professionals must rely on a physical exam and a history of symptoms in order to diagnose fibromyalgia.

Fibromyalgia is a condition that causes widespread muscle pain and fatigue. The Arthritis Foundation lists it as one of the more then one hundred forms of arthritis, however the current belief is that the symptoms are caused by an overactive nervous system.