Pityriasis alb and Vitiligo (group C) | Vitiligo (group B) | Pityriasis alba (group A) | Demographic data |
12 | 28 | 38 | Numberof patients |
9 (75%) 3 (25%) | 16 (57.14%) 12 (42.86%) | 33 (86.89%) 5 (13.16%) | Male Female |
8.33 ± 2.78 years | 15.46 ± 12.50 years | 8. 68 ± 5.94 Years | Age (mean ± SD) |
In PA 3 (25%) 6 (50%) 3 (25%) In vitiligo <1 year 9 (75%) 1 - 5 years 3 (25%) | 14 (50%) 10 (35.71%) 4 (14.29%) | 20 (52.89%) 17 (44.74%) 1 (2.63%) | Duration of disease Less than 1 year 1 - 5 years More than 5 years |
5 (41.67%) | 1 (3.57%) | 19 (50%) | Family history of atopy |
7 (58.33%) | 11 (39.29 %) | 17 (44.74%) | Family history of vitiligo |
5 (41.67%) | 8 (28.57%) | 3 (7.89%) | Family history of other autoimmune disease |
5 (41.66%) | 6 (21.43%) | 14 (36.84%) | Personal history of atopy |
6 (50%) | 11 (39.28%) | 2 (5.26%) | Koebner’s phenomenon |