It is a chronic disorder characterized by widespread musculoskeletal pain, fatigue, and tenderness in localized areas. Fibromyalgia is the most common musculoskeletal condition after osteoarthritis. Still, it is often misdiagnosed and misunderstood. Its characteristics include widespread muscle and joint pain and fatigue as well as other symptoms. Fibromyalgia can lead to depression and social isolation. This is just a little background on what it is for people who are interested.