Reactive arthritis following intestinal infection

Reactive arthritis is joint inflammation induced by extra-articular infection, and is not caused by direct infection of the joint by pathogens. Post-enteric reactive arthritis is arthritis that occurs after intestinal infection. Aho first proposed the concept of reactive arthritis in 1973. Reactive arthritis includes two diseases: Reiter's syndrome and rheumatic fever. In contrast, "post-enteric arthritis" has evidence of pathogenic microbial infection, and no pathogens are present in the affected joints. There may be no substantial difference between reactive arthritis and post-infectious arthritis.