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1. Inflammation of fibrous tissue. 2. Term used to denote generalized muscle aching, soreness, or stiffness, with multiple tender foci (trigger points); of unknown etiology. SYN: muscular rheumatism. [fibro- + G. -itis, inflammation]
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fi·bro·sit·ic -'sit-ik adj
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n.
inflammation of fibrous connective tissue, especially an acute inflammation of back muscles and their sheaths, causing pain and stiffness. See also muscular rheumatism.
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fi·bro·si·tis (fi″bro-siґtis) [fibro- + -itis ] inflammation especially of the muscle sheaths and fascial layers of the locomotor system; it is marked by pain and stiffness. Called also fibrofascitis and muscular rheumatism.Medical dictionary. 2011.