Lack of dopamine tied to fibromyalgia symptoms

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Physicians often speak of "fibromyalgia syndrome" because people who have the muscular aches and pains most often associated with this complaint may also have other symptoms such as chronic fatigue, depression and involuntary leg movements, says Dr. David Dryland, a Medford, Ore., rheumatologist who treats many patients with "fibro."

Dryland says researchers have discovered over the past few years that fibromyalgia is caused by a problem in the central nervous system, specifically, a lack of dopamine, a chemical that transmits signals between nerve cells.

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