Table 1.
Characteristics of the study groups.
| AD&PS n = 38 | AD n = 41 | PS n = 28 | |
|---|---|---|---|
| Mean age (yrs) | 6.5 ± 3.2 | 5.3 ± 5.1 | 6.4 ± 4.3 |
| Female (%) | 13 (34)^ | 23 (56) | 18 (64) |
| Other atopic disease | |||
| 2003BA (%) | 3 (8) | 8 (20)∗ | 0 |
| AR (%) | 6 (16) | 17 (41)∗ | 6 (21) |
| Family history | |||
| ADEA (%) | 6 (15) | 18 (43)^^ | 4 (14) |
| PS (%) | 11 (29) | 2 (5)# | 7 (25) |
| Affected area | |||
| Skin | |||
| Head | 11 (29) | 15 (24) | 11 (39) |
| Arms | 10 (26) | 15 (36) | 8 (29) |
| Legs | 9 (24) | 13 (31) | 9 (32) |
| Trunk | 14 (37) | 8 (19)∗∗ | 11 (39) |
| Nails | 9 (24) | 14 (34) | 9 (32) |
| SCORAD | 35 ± 8 | 42 ± 11 | — |
| PASI | 28 ± 10 | — | 34 ± 9 |
| BMI >23 | 14 (37)^^ | 5 (12) | 7 (25) |
| Confirmed arthritis | 4 (11) | 4 (10) | 5 (19) |
Legend: AD&PS: psoriatic dermatitis; ADEA: atopic disease; PS: psoriasis; BA: allergic bronchial asthma; AR: allergic rhinitis; SCORAD: SCORing Atopic Dermatitis; PASI: psoriasis area and severity index; ^: significant male dominance in AD&PS vs. AD and AD&PS vs. PS (Wilcoxon test, p < 0.05); ∗ increased frequency of BA and AR in AD vs. AD&PS and AD vs. PS (p < 0.05); ^^ increased family history of atopic disease in AD vs. AD&PS and AD vs. PS (p < 0.05); # decreased family history of PS in AD vs. the other groups (p < 0.05); ∗∗ decreases skin of trunk involvement in AD vs. the other groups (p = 0, 05); ^^ overweight was more common in the AD&PS group than in the other groups (p < 0.05).