Clinical features determining the classification of patients as either juvenile psoriatic arthritis (JPsA) or nonpsoriatic juvenile idiopathic arthritis (JIA). Values are number of patients (%).
| Feature | JPsA | JIA |
|---|---|---|
| Definite psoriasis | 44 (83) | 0 (0) |
| Psoriasis-like rash | 1 (2) | 0 (0) |
| Nail changes | 28 (53) | 7 (13) |
| Dactylitis | 16 (30) | 4 (7.5) |
| Psoriasis in first-degree relative | 15 (28) | 0 (0) |
| Psoriasis in second-degree relative | 12 (23) | 3 (6) |