Although the exact etiology cannot be determined in fibromyalgia, it is thought that there are many mechanisms that contribute to the formation of Fibromyalgia. Evidence for some biochemical, neurohormonal, central nervous system, immunological, psychological and environmental factors that may play a role in the disease has been found.
Fibromyalgia is a non-articular, chronic rheumatic disease of unknown etiology characterized by widespread musculoskeletal pain, sleep disturbance, fatigue, and the presence of multiple tender points.