J Rheumatol
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To establish the reliability with which tenderness could be evaluated in patients with chronic myalgias, using dolorimetry and palpation. ⋯ Both dolorimetry and palpation are sufficiently reliable to discriminate control patients from patients with myofascial pain and FM, but may not discriminate patients with myofascial pain from those with FM. Neither method appears to correlate well with the location of the clinical pain complaint, regardless of diagnosis.