This article is freely available to all

Article Abstract

Because this piece does not have an abstract, we have provided for your benefit the first 3 sentences of the full text.

During the past 20 years, fibromyalgia has emerged as a prominent but poorly understood illness. Conservative estimates are that 3 to 6 million Americans have fibromyalgia.1 Historically, fibromyalgia has been classified as an inflammatory musculoskeletal disease, and, until1980, the condition was often termed fibrositis.