There are few clinical symptoms, but the clinical picture is dominated by arthritis in one or more joints, resulting in pain, swelling, redness, and heat sensation in the affected areas. The urethra, cervix and the throat may be swabbed in an attempt to culture the causative organisms. Cultures may also be carried out on urine and stool samples or on fluid obtained by arthrocentesis. Tests for C-reactive protein and erythrocyte sedimentation rate are non-specific tests that can be done to corroborate the diagnosis of the syndrome. A blood test for the genetic marker HLA-B27 may also be performed. About 75 percent of all the patients with<unk>  have this gene. Diagnostic criteria Although there are no definitive criteria to diagnose the existence of<unk> , the American College of Rheumatology has published sensitivity and specificity guidelines. + Percent Sensitivity and Specificity of Various Criteria for Typical<unk>  Method of diagnosis Sensitivity Specificity 1. Episode of arthritis of more than 1 month with urethritis and/or cervicitis 84.3% 98.2% 2. Episode of arthritis of more than 1 month and either urethritis or cervicitis, or bilateral conjunctivitis 85.5% 96.4% 3. Episode of arthritis, conjunctivitis, and urethritis 50.6% 98.8% 4. Episode of arthritis of more than 1 month, conjunctivitis, and urethritis 48.2% 98.8%
Reactive arthritis
Behçet's disease
Rheumatoid arthritis
Septic arthritis
Psoriatic arthritis
Plantar fasciitis
Inflammatory arthritis
Rheumatism