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ASAS classification criteria for peripheral SpA. Adapted from Rudwaleit et al4
| Peripheral arthritis and/or enthesitis and/or dactylitis* PLUS | ||
|---|---|---|
|
≥1 SpA feature Uveitis Psoriasis Crohn’s/colitis Preceding infection HLA-B27 Sacroiliitis on imaging |
OR |
≥2 other SpA features Arthritis Enthesitis Dactylitis Inflammatory back pain (in the past) Family history of SpA |
*Current peripheral arthritis (compatible with SpA), enthesitis and/or dactylitis, diagnosed clinically by a doctor.
