Table 1.
Differences between adult and pediatric-onset psoriatic arthritis.
| Clinical feature | Adult PsA* | JPsA† |
|---|---|---|
| Timing of psoriasis and arthritis onset | psoriasis prior to arthritis | arthritis prior to psoriasis |
| Peripheral arthritis | ||
| •Oligoarticular | 20%−55% | 45%−55% |
| •Polyarticular | 20%−60% | 35%−55% |
| •Oligo-Extended | 15%−38% | |
| Axial arthritis | 7%−40% | 10%−30% |
| Radiological damage | 47 % | 25% |
| Enthesitis | 30%−50% | 12%−45% |
| Dactylitis | 40%−50% | 17%−37% |
| Nail involvement | 41%−93% | 37%−57% |
| Uveitis | 8% | 8%−13% |
| HLA-B27 | 40%−50% | 10%−25% |
| ANA positive | 16% | 40%−46% |