Modified McGonagle criteria for psoriatic arthritis33
| Psoriasis or family history of psoriasis |
| Plus any one of: |
| Clinical inflammatory enthesitis |
| Radiographic enthesitis (replaces MRI evidence of enthesitis) |
| Distal interphalangeal joint disease |
| Sacroiliitis/spinal inflammation |
| Uncommon arthropathies (SAPHO, spondylodiscitis, arthritis mutilans, onchyo-pachydermo-periostitis, chronic multifocal recurrent osteomyelitis) |
| Dactylitis |
| Monoarthritis |
| Oligoarthritis (four or less swollen joints) |