Evidence of nerve damage in about half of fibromyalgia patients

About half of a small group of patients with fibromyalgia -- a common syndrome that causes chronic pain and other symptoms -- was found to have damage to nerve fibers in their skin and other evidence of a disease called small-fiber polyneuropathy (SFPN). Unlike fibromyalgia, SFPN has a clear pathology and is known to be caused by specific medical conditions, some of which can be treated and sometimes cured.

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