Diagnostic criteria for undifferentiated peripheral spondyloarthropathy
Are there diagnostic criteria to identify patients with an undifferentiated peripheral spondyloarthropathy?
The Assessment of SpondyloArthritis International Society classification criteria for peripheral spondyloarthritis have a sensitivity of 78% and specificity of 83% for detecting a patient who has a peripheral spondyloarthropathy. They are:
| Peripheral arthritis (asymmetric lower extremity) or enthesitis or dactylitis | OR | Peripheral arthritis (asymmetric lower extremity) or enthesitis or dactylitis |
| Plus, one of the following: HLA-B27; genitourinary/gastrointestinal infection; psoriasis; inflammatory bowel disease; or magnetic resonance imaging showing sacroiliitis. | Plus, two of the following: arthritis; enthesitis; dactylitis; inflammatory back pain; family history of a spondyloarthropathy. |
