Axial spondyloarthritis ref. [11] | Peripheral spondyloarthritis ref. [12] | ||
---|---|---|---|
Individuals <45 years with back pain >3 months* | Individuals with arthritis or enthesitis or dactylitis | ||
Imaging | HLA-B27 | ||
Sacroiliitis on MR or X-rays | Positive test | ||
Additional features needed for classification§ | |||
At least one | At least two | At least one | At least two |
Inflammatory back pain | Uveitis | Arthritis | |
Arthritis | Psoriasis | Enthesitis (heel pain) | |
Enthesitis (heel pain) | Crohn’s/colitis | Dactylitis | |
Uveitis | Previous infection | Inflammatory back pain (ever) | |
Dactylitis | HLA-B27 | Family history for SpA | |
Psoriasis | Sacroiliitis on imaging | ||
Crohn’s/colitis | |||
Good response to non-steroidal antinflammatory drugs | |||
Family history for spondyloarthritis | |||
HLA-B27 | |||
Elevated C reactive protein |