The fight/flight part of the autonomic nervous system has been shown to be ramped up. Two recent studies, suggest, though, that entire ANS may be messed up.
People with fibromyalgia display an unusual activation in one of the most primordial parts of the brain - the brainstem. The activation involves giant neurons and likely increases pain sensitivity and impairs autonomic nervous system functioning.
Active herpes simplex virus found in the guts of fibromyalgia patients could be contributing to or causing the disease. An antiviral trial is under way.
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