Acute rheumatologic disorders in the elderly.

A variety of rheumatologic disorders affect the elderly. Some of these problems are seen almost exclusively in the elderly, such as temporal arteritis and pseudogout. Because of underlying chronic diseases, these patients are also at increased risk for joint infection and resultant sepsis. Evaluation of synovial fluid from the inflamed joint is important. Light microscopy evaluation with a red polarizing compensator can help diagnose crystal-mediated disease, such as gout or pseudogout. Examination of Gram stains can help diagnose infectious arthritis. Thus, appropriate processing of synovial fluid is mandatory for the diagnosis of many rheumatologic disorders that occur in the elderly. A variety of metabolic disorders are associated with pseudogout and should be searched for on laboratory evaluation. Appropriate laboratory evaluation and follow-up following the acute episode are important in the care of these patients. For example, temporal arteritis with resultant blindness is a feared disorder in the elderly. Transient blindness, headaches, jaw claudication, and an elevated Westergren sedimentation rate suggest this diagnosis. Aches and pain in the neck and shoulder area, especially in the morning, are typical of polymyalgia rheumatica. Polymyalgia rheumatica may also be a symptom of temporal arteritis.