A chronic medical condition characterized by widespread musculoskeletal pain, fatigue, and tenderness in localized areas. Often accompanied by sleep disturbances and cognitive difficulties.
Coined in 1976 from Latin 'fibra' (fiber), Greek 'mys' (muscle), Greek 'algos' (pain), and the suffix '-ia' (condition). The term replaced earlier names like 'fibrositis' as understanding of the condition evolved from inflammation-based to neurological theories.
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