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The clinical pictures of giant cell arteritis. Temporal arteritis, polymyalgia rheumatica, and fever of unknown origin.

In a prospective study, 68 hospitalized patients were diagnosed as having giant cell arteritis. Temporal artery biopsy was performed in all patients and showed histologic evidence of arteritis in 42 (62%). Twenty-six patients had a negative biopsy but met the clinical criteria for the diagnosis. Four different clinical pictures were recognized. Thirteen patients (19%) had symptoms of localized temporal arteritis without muscular discomfort. The polymyalgia rheumatica syndrome without signs of localized arteritis was seen in 33 patients (49%). Seventeen (25%) had symptoms of both polymyalgia rheumatica and temporal arteritis. Five patients (7%) had general symptoms only, such as fever, anorexia, and fatigue, without muscular or arteritic symptoms.