[Reactive arthritis].

Reactive arthritis is an abacterial form of arthritis that develops after infection at a site distant from the affected joint(s). The condition has long been recognised, often under the name of Reiter's syndrome. During recent years a number of research teams have published new findings concerning the pathogenesis of reactive arthritis which may also prove to be of importance for other rheumatic diseases. The clinical picture, treatment and prognosis of reactive arthritis are also discussed in the article.