Diagnosis and Management of Polymyalgia Rheumatica/Giant Cell Arteritis

There are no standardised diagnostic criteria for polymyalgia rheumatica. The combination of persistent pain (at least 1 month) with marked morning stiffness in at least 2 of the neck, shoulder or pelvic girdle is characteristic of polymyalgia rheumatica. The other criteria are age >50 years, erythrocyte sedimentation rate (ESR) >40 mm/hour, rapid response to corticosteroids and an absence of other diseases capable of causing the musculoskeletal symptoms. A normal ESR does not exclude a diagnosis of polymyalgia rheumatica. Diagnostic temporal artery biopsy is recommended in all patients suspected of having giant cell arteritis. The segment of temporal artery with abnormality on physical examination should be biopsied.