Table 3.
Prevalence of diagnosis in various age groups.
| Cutaneous diseases | Infants and toddlers( < 3 years old) | Preschool age (3 to < 6 years old) | School age (6 to < 12 years old) | Adolescents(12–18 years old) | p value |
|---|---|---|---|---|---|
| Eczematous dermatitis | (n = 71) | (n = 91) | (n = 56) | (n = 23) | |
| Atopic dermatitis | 28 (39.44)a | 33 (36.26)a | 10 (17.86)b | 5 (21.74)a | 0.031 |
| Juvenile plantar dermatosis of childhood | 0 (0.00)a | 4 (4.40)a | 6 (10.71)b | 0 (0.00)a | 0.017 |
| Seborrheic dermatitis | 18 (25.35)a | 0 (0.00)b | 0 (0.00)b | 2 (8.70)a | <0.001 |
| Dyshidrosis | 0 (0.00)a | 1 (1.10)a | 5 (8.93)b | 0 (0.00)a | 0.005 |
| Prurigo nodularis | 0 (0.00)a | 1 (1.10)a | 0 (0.00)a | 4 (17.39)b | <0.001 |
| Pityriasis alba | 0 (0.00)a | 2 (2.20)ab | 5 (8.93)b | 0 (0.00)a | 0.017 |
| Lichen simplex chronicus | 0 (0.00)a | 0 (0.00)a | 1 (1.79)a | 3 (13.04)b | <0.001 |
| Keratosis pilaris | 0 (0.00)a | 0 (0.00)a | 1 (1.79)a | 3 (13.04)b | <0.001 |
| Papulosquamous diseases | (n = 2) | (n = 10) | (n = 31) | (n = 13) | |
| Pityriasis lichenoides | 0 (0.00) | 0 (0.00) | 20 (64.52)a | 3 (23.08)b | 0.001 |
| Psoriasis | 0 (0.00) | 2 (20.00)ab | 4 (12.90)a | 8 (61.54)b | 0.006 |
| Pustular psoriasis | 2 (100.00)a | 4 (40.00)a | 2 (6.45)b | 0 (0.00)b | <0.001 |
| Connective tissue diseases | (n = 3) | (n = 4) | (n = 16) | (n = 21) | |
| Lichen sclerosus et atrophicus | 0 (0.00) | 1 (25.00) | 0 (0.00) | 0 (0.00) | 0.017 |
| Neonatal lupus | 3 (100.00) | 0 (0.00) | 0 (0) | 0 (0.00) | <0.001 |
| Dermatomyositis | 0 (0.00) | 1 (25.00) | 0 (0.00) | 0 (0.00) | 0.017 |
| Vascular and lymphatic disorders | (n = 84) | (n = 5) | (n = 2) | (n = 2) | |
| Hemangioma | 72 (85.71) | 0 (0.00) | 0 (0.00) | 0 (0.00) | <0.001 |
| Vascular malformation | 3 (3.57)a | 2 (40.00)b | 0 (0.00) | 0 (0.00) | 0.006 |
| Venolymphatic malformation | 3 (3.57)a | 1 (20.00)a | 1 (50.00)b | 0 (0.00) | 0.014 |
| Lymphangioma circumscriptum | 1 (1.19)a | 0 (0.00) | 1 (50.00)b | 0 (0.00) | <0.001 |
| Fungal infections | (n = 2) | (n = 1) | (n = 11) | (n = 7) | |
| Tinea capitis | 0 (0.00) | 0 (0.00) | 8 (72.73) | 0 (0.00) | 0.008 |
| Candidiasis | 2 (100.00) | 0 (0.00) | 0 (0.00) | 0 (0.00) | <0.001 |
| Vaginal candidiasis | 0 (0.00) | 1 (100.00) | 0 (0.00) | 0 (0.00) | <0.001 |
| Pigmentary disorders | (n = 14) | (n = 7) | (n = 32) | (n = 7) | |
| Vitiligo | 0 (0.00)a | 4 (57.14)b | 30 (93.75)c | 2 (28.57)b | <0.001 |
| Nevus depigmentosus | 3 (21.43)a | 2 (28.57)a | 0 (0.00)b | 0 (0.00)b | 0.015 |
| Vesiculobullous diseases | (n = 9) | (n = 5) | (n = 3) | (n = 5) | |
| Epidermolysis bullosa | 7 (77.78) | 0 (0.00) | 0 (0.00) | 0 (0.00) | 0.002 |
| Chronic bullous dermatosis of childhood | 0 (0.00)a | 4 (80.00)b | 2 (66.67)b | 0 (0.00)a | 0.002 |
| Pemphigus vulgaris | 0 (0.00)a | 0 (0.00)a | 1 (33.33)ab | 4 (80.00)b | 0.003 |
| Miscellaneous | (n = 27) | (n = 22) | (n = 15) | (n = 26) | |
| Acne | 0 (0.00)a | 0 (0.00)a | 2 (13.33)a | 20 (76.92)b | <0.001 |
| Urticaria pigmentosa | 0 (0.00)a | 10 (45.45)b | 2 (13.33)a | 0 (0.00)a | <0.001 |
| Langerhans’ cell histiocytosis | 4 (14.81) | 0 (0.00) | 0 (0.00) | 0 (0.00) | 0.021 |
Different superscripts (a, b, c, ab) in the same row indicate a significant difference between groups (chi-squared test, multiple comparison test by Bonferroni, p < 0.05).