Table II.
Clinical characteristics of the studied patients with psoriasis (n = 2534)
| Clinical characteristics | Results |
|---|---|
| Age at disease onset (mean ± SD), y | 30.5 ± 17.1 |
| Disease duration, mo | |
| Mean ± SD | 106.6 ± 60.0 |
| Range | 0.25-720 |
| Disease onset | |
| Gradual | 2154 (85.0) |
| Sudden | 380 (15.0) |
| Disease course | |
| Progressive | 1153 (45.5) |
| Regressive | 56 (2.2) |
| Remissions and exacerbations | 1325 (52.3) |
| Symptoms∗ | |
| Itching | 2088 (82.4) |
| Dryness | 926 (36.5) |
| Skin pain and tenderness | 491 (19.4) |
| None | 263 (10.4) |
| Affected sites∗ | |
| Lower limbs | 1921 (75.8) |
| Upper limbs | 1774 (70.0) |
| Scalp | 1560 (61.6) |
| Trunk | 1476 (58.2) |
| Back | 1399 (55.2) |
| Knees | 1362 (53.7) |
| Elbows | 1346 (53.1) |
| Face | 549 (21.7) |
| Nails | 524 (20.7) |
| Palms | 489 (19.3) |
| Flexures | 482 (19.0) |
| Genitalia | 444 (17.5) |
| Neck | 430 (17.0) |
| Soles | 429 (16.9) |
| Phenotype of psoriasis∗ | |
| Plaque psoriasis | 2132 (84.1) |
| Guttate | 261 (10.3) |
| Erythrodermic psoriasis | 95 (3.7) |
| Chronic palmoplantar pustulosis | 46 (1.8) |
| Generalized pustular | 45 (1.8) |
Data are presented as No. (%) unless otherwise indicated.
SD, Standard deviation.
∗
Patients may present by multiple symptoms, sites, and phenotypes simultaneously.