Criteria of Sieper and Braun for Reactive Arthritis

Features of reactive arthritis - all of the following:

(1) asymmetrical arthritis

(2) predominantly of the lower limbs

(3) evidence of a preceding infection - one or more of the following:

(3a) diarrhea within the 4 weeks preceding onset

(3b) urethritis within the 4 weeks preceding onset

(3c) stool culture positive for Salmonella, Shigella, Yersinia

(3d) detection of Chlamydia trachomatis

(3e) serologic evidence of Salmonella or Shigella infection (antibodies to lipopolysaccharide or specific antigen)

(3f) antibodies to Chlamydia trachomatis

(3g) detection of chlamydial DNA in a joint by PCR

(4) exclusion of other rheumatic diseases