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OBJECTIVE: We hypothesized that change in pain threshold to pressure reflects a generalized change in the pain system affecting both tender and control points. METHODS: We assessed 18 tender points and 4 control points using an algometer in 60 patients with generalized fibromyalgia/fibrositis syndrome, 60 patients with localized chronic pain syndromes, and in 60 pain-free subjects. RESULTS: A significant correlation was found between myalgia scores at tender points and control points in these subjects. CONCLUSION: These results suggest that there is a diffuse change in pain modulation in fibromyalgia, as hypothesized, but the tender point is still clinically useful.
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Granges et al. (1993) studied this question.
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