- Eponym dropped because Reiter was a prominent Nazi
Uncommon
Onset 1-4 weeks after triggering infection- Chlamydia (genital)
- GI: Salmonella, Shigella, Campylobacter, Yersinia
- Medium / Large joints
- Maybe spine involvement, esp. sacro-iliac joints
- Rarely small-joint
- Enthesitis, esp. heel
- Dactylitis (“sausage digits”)
- Eye — conjunctivitis, episcleritis, iritis
- Genital: urethritis, pelvic pain (men & women)
- Oral ulcers
- Keratoderma blennorrhagica (hyperkeratotic skin lesions on soles and palms)
- Erythema nodosum (painful red nodules on shins)
Lab — Not helpful (poor specificity & sensitivity)
Diagnosis — completely clinical !!!
** Asymmetric oligoarthritis (esp. hip / knee / ankle) PLUS
- Recent Chlamydia / Diarrhea = very likely
- Enthesitis / Dactylitis / Sacroiliitis / Eye = likely
- Keratoderma blennorrhagica = very likely [but very uncommon]
- No Other Diagnosis = quite possible
See posting Monoarticular / Oligoarticular Arthritis