Disease characteristics of psoriatic arthritis patients with dactylitis (n = 260)
| Variable | Presentation | First visit with dactylitis |
|---|---|---|
| Values are mean (SD) or per cent. | ||
| NSAID, non-steroidal anti-inflammatory drug; PUVA, psoralen plus ultraviolet A irradiation. | ||
| Age at onset (years) | ||
| Psoriasis | 28 (13.1) | – |
| Psoriatic arthritis | 34 (11.6) | − |
| Disease duration (years) | ||
| Psoriasis | 13 (11.2) | 14 (12.0) |
| Psoriatic arthritis | 7 (7.9) | 8 (8.6) |
| Age (years) | 41 (12.3) | 42 (12.8) |
| Male sex | 57% | |
| Arthritis pattern | ||
| 1. Distal | 8% | 7% |
| 2. Oligoarthritis | 14% | 13% |
| 3. Polyarthritis | 44% | 43% |
| 4. Back only | 0.4% | − |
| 5. Back+1 | 4% | 4% |
| 6. Back+2 | 6% | 5% |
| 7. Back+3 | 23% | 28% |
| Number of active joints | 11 (9.1) | 11 (9.2) |
| Number of clinically deformed joints | 2 (5.3) | 3 (6.1) |
| Dactylitis (% present) | 33.5% | |
| Psoriasis (% present) | 95% | 97% |
| Nail lesions (% present) | 84% | 85% |
| Drug treatment | ||
| None | 14% | 11% |
| NSAID | 47% | 42% |
| Gold, chloroquine, sulfasalzine | 5% | 6% |
| Imuran, methotrexate | 13% | 15% |
| PUVA, retinoid | 6% | 9% |
| Corticosteroid | 15% | 18% |