Definition: Set of clinical diagnostic standards defined by Healey (1984) at Mason Clinic for the confirmation of polymyalgia rheumatica, an inflammatory condition of unknown etiology characterized by aching and stiffness in the shoulder and in the pelvic girdles and neck. Criteria include persistent pain for at least 1 month involving two of the following areas: neck, shoulders, and pelvic girdle; morning stiffness lasting longer than 1 hour; rapid response to prednisone; absence of other diseases capable of causing the musculoskeletal symptoms; patient age exceeding 50 years; erythrocyte sedimentation rate that exceeds 40 mm/hour. All criteria must be satisfied for the diagnosis to be confirmed.
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