Reactive arthritis after intestinal infection

Reactive arthritis is arthritis induced by extra-articular infections, not caused by pathogens directly infecting the joints. Reactive arthritis after enteric infection is arthritis that occurs after enteric infection. Aho first introduced the concept of reactive arthritis in 1973. Reactive arthritis includes two diseases, Reiter's syndrome and rheumatic fever. In contrast, arthritis after intestinal infection has evidence of pathogenic microbial infection and no pathogens in the affected joints. There may not be a substantial difference between reactive arthritis and post-infection arthritis.