Fibromyalgia is a common rheumatic syndrome characterized by widespread pain in fibrous tissues, muscles, tendons, and other connective tissues. Although the tissues are painful, they are not swollen or weak. The cause of this disorder is unknown, although it is a chronic problem that can come and go for years.The red circles identify common tender points associated with fibromyalgia.
Review Date: 03/10/2011
Reviewed By: Harvey Simon, MD, Editor-in-Chief, Associate Professor of Medicine, Harvard Medical School; Physician, Massachusetts General Hospital.