摘要

Objectives: Vitiligo is the most prevalent acquired leukoderma. It has a profound psychological impact, especially in people with skin of color. It might be difficult to diagnose vitiligo early since it resembles nevus depigmentosus, pityriasis alba, idiopathic guttate hypomelanosis and post-tinea versicolor hypopigmentation. Materials / method: Published literature discussing dermoscopic criteria of vitiligo as well as other common hypopigmented lesions was revised from 2000 till 2023. The criteria with their definitions were tabulated. 168 patients with hypopigmented skin lesions namely vitiligo, depigmented nevi, mycosis fungoides, idiopathic guttate hypomelanosis, pityriasis alba, pityriasis versicolor, lichen sclerosis et atrophicus, or ash leaf macule of tuberous sclerosis were diagnosed clinically and confirmed pathologically. Dermoscopic images of their lesions were obtained. Results: Statistical analysis was used to calculate the sensitivity and specificity of diagnosis of dermatoscopic images of lesions in comparison to confirmed clinicopathological diagnosis. White structureless areas, well-defined borders, and absent pigment network were the most frequent findings in lesions of vitiligo in 35/38, 31/38, and 30/38 patients, respectively. Conclusion: Dermoscopy enhanced the diagnosis of 36 cases of vitiligo out of 38 patients with a sensitivity of 94.7% and 98.5% specificity. Thus dermoscopic criteria are valid in identifying cases of vitiligo and differentiating it from other hypopigmented disorders.