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Fibromyalgia (FM) is a chronic illness that causes pain in muscles and ligaments.
In addition to muscular pain and stiffness, this medical condition also causes
fatigue, sleep problems, depression, and an inability to think clearly. FM affects
about 4 million Americans, the vast majority of them are women in their mid-30s
to late-50s. Once classified as a psychological disorder, due to the lack of
objective findings on physical exams, blood tests or x-rays, FM has recently been
reclassified as a central sensitivity syndrome (CSS).
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