SPINEACHE: a mnemonic for the clinical parameters of the ASAS classification for axial spondyloarthritis.
| Sacroiliitis on Imaging (by radiograph or MRI) + ≥ 1 clinical measure |
| HLA-B27 + ≥ 2 other clinical measures |
| Clinical measures |
| SPINEACHE |
| Sausage digit (dactylitis) |
| Psoriasis-positive family history of SpA |
| Inflammatory back pain |
| NSAID good response |
| Enthesitis (heel) |
| Arthritis |
| Crohn’s/colitis disease — elevated CRP |
| HLA-B27 |
| Eye (uveitis) |
MRI: magnetic resonance imaging; NSAID: nonsteroidal antiinflammatory drugs; CRP: C-reactive protein