Characterized by chronic widespread pain, fibromyalgia presents complex problems in both its diagnosis and treatment. Fibromyalgia is a fairly common condition, affecting 2-4% of the population. The condition's prevalence has increased dramatically since 1990. The condition is not new, but has
been known by various names, such as fibrositis and myofascial pain syndrome until 1990, when the American College of Rheumatology (ACR) published new classification...