Features and Outcomes of Patients With Reactive Arthritis

The following variables will be retrospectively assessed by medical record review using a standardised data collection form:demographics; gender, age; family or personal history of spondyloarthritis, psoriasis, uveitis, inflammatory bowel disease; clinical presentation; mono, oligo or polyarthritis, dactylitis, inflammatory joint pain, enthesopathy, axial symptoms, fever, extra-articular manifestations (conjunctivitis, anterior uveitis, circinate balanitis, skin rash); time interval between infection and musculoskeletal manifestations; causal microorganism if known, or triggering event; HLA-B27; radiographic sacroiliitis; treatments and outcomes (complete recovery at one year follow-up, relapse within 6 months after onset, or spondyloarthritis according to the ASAS criteria).