[Giant cell arteritis and polymyalgia rheumatica: diagnostic criteria]

Giant cell arteritis still results in high morbidity related to systemic complications involving the eyes, the central nervous system, the heart and the aorta. Therefore, reliable diagnostic criteria are required in giant cell arteritis and polymyalgia rheumatica (PMR), to detect and manage at early stages patients with giant cell arteritis and PMR. Indeed, diagnostic criteria of giant cell arteritis and PMR have been validated. Taken together, first we propose to review the diagnostic criteria of giant cell arteritis (ACR, GRACG) and PMR (Bird, Jones-Hazleman, Chuang-Hunder, Dasgupta). Second, more recent diagnostic criteria of GCA and PMR are further reviewed, including biochemical/immunological data (especially anti-ferritin antibodies), temporal artery biopsy and imaging findings (artery ultrasonography, angio-CT-scan, angio-MRI, PET-scan, joint echography, and MRI).