"Fibromyalgia is a common cause of chronic, diffuse, muscosceletal pain. It is a disease that affects muscles and soft tissue such as tendons and ligaments. This condition is not associated with genuine tissue inflammation and the aetiology of the disorder remains poorly understood.
Fatigue is present in more than 90 percent of cases and is occasionally the chief complaint. Most fibromyalgia-patients report light sleep and feeling un-refreshed in the morning, while others report symptoms suggestive of pathologic sleep disturbances such as sleep apnoea or nocturnal myoclonus. Light-headedness, dizziness, and feeling faint are common symptoms. Headaches are present in a majority of fibromyalgia-patients. Psychological features presented including mood disturbances, especially depression, anxiety, post-traumatic stress disorder and heightened somatic concern, and cognitive dysfunction especially short term memory loss ..."