[Elderly onset rheumatoid arthritis].

Elderly-onset rheumatoid arthritis (EORA), defined as rheumatoid arthritis (RA) with the onset at the age > or =60 differs sligthy at presentation from younger-onset RA (YORA) by a more equal sex distribution, a higher frequency of an acute onset, more frequent involvement of large joints, especially of the shoulder, and higher disease activity. Longitudinal studies have shown greater disease activity, more severe radiographic damage and functional decline in patients with EORA than in those with YORA. These differences were only found in seropositive patients. In seronegative EORA patients a less severe course of the disease and a better outcome have been observed, with the clinical manifestations of polymyalgia rheumatica or remitting seronegative symmetrical synovitis with pitting edema. This article is a review of available data concerning differences between EORA and YORA.