Journal of Cutaneous and Aesthetic Surgery
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ORIGINAL ARTICLE
Year : 2019  |  Volume : 12  |  Issue : 1  |  Page : 36-41

Cross-sectional study of dermatoscopic findings in relation to activity in vitiligo: BPLeFoSK criteria for stability


1 Department of Dermatology, Christian Medical College, Vellore, Tamil Nadu, India
2 Department of Biostatistics, Christian Medical College, Vellore, Tamil Nadu, India
3 Department of Dermatology Christian Medical College, Vellore, Tamil Nadu, India

Correspondence Address:
Balakrishnan Nirmal
Department of Dermatology, Christian Medical College, Vellore, Tamil Nadu
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/JCAS.JCAS_75_18

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Background: Stability in vitiligo is an important concept in guiding patient management and a vital prerequisite before vitiligo surgery. Disease activity of vitiligo based on patient’s history is imprecise. It is practically impossible to perform biopsy from all lesions of vitiligo to ascertain stability. Dermatoscopy can be used to examine all clinical lesions in a patient of vitiligo. There is a need to validate many reported dermatoscopic findings for universal use. Aims: To analyze the significance of dermatoscopic findings in the activity of vitiligo and to devise a cutoff score for stable vitiligo. Materials and Methods: Dermatoscopic examination was performed in 85 patients clinically diagnosed with vitiligo. Six dermatoscopic parameters, namely, border, pigment network, perilesional hyperpigmentation, perifollicular pigmentation, satellite lesions, and micro-Koebner phenomenon (acronym: BPLeFoSK) were evaluated against Wood’s lamp findings as standard. Chi-square test was used to test association between categorical variables. Cutoff values for stability for these six parameters were plotted in receiver operating curve. Results: A total of 131 vitiligo lesions were analyzed with dermatoscopy. Absence of satellite lesions and absence of micro-Koebner phenomenon were the most sensitive parameters (96.7% and 100%, respectively). Sharp border and absent or reticulate pigment network within the vitiligo patch were the most specific findings (100% and 91.5%, respectively). Conclusion: A cutoff score of more than or equal to 1.5 using the “BPLeFoSK criteria” indicates stability in the vitiligo lesion.


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