Gonococcal arthritis | Reactive arthritis (formerly Reiter's syndrome) | Rheumatoid arthritis | Psoriatic arthritis | |
Age | Young | Young | Middle | Middle |
Gender | Female>male | Male>female | Female>male | No effect |
Onset | Abrupt | Abrupt | Insidious | Insidious |
Joint number | Monoarthritis or oligoarthritis | Oligoarthritis | Polyarthritis | Oligoarthritis |
Symmetry of arthritis | No | No | Yes | No |
Sausage digits | No | Yes | No | Yes |
Back pain | No | Yes | No | Yes |
Urethritis | Yes | Yes | No | No |
Skin lesions | Pustular, nodular, or vesicular | Palms and soles in 10 percent | Subcutaneous nodules | Psoriasis |
Gonococcus identified on testing | Yes | No | No | No |
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