Segmental vitiligo (SV) is considered to be relatively less responsive form of vitiligo to medical treatment. While excimer light (EL) has shown great promise in treating localized vitiligo especially on face and neck, its efficacy in SV is not reported so commonly. We conducted a retrospective study on patients of childhood SV who had received EL therapy from January 2016 to December 2018 at our institute. Data of all such cases who had received at least 10 doses of EL treatment or achieved complete repigmentation were selected for analysis. Records of 26 children with SV satisfied the selection criteria. Excellent response (>75% repigmentation) was documented in 65.4% (17/26) patients with 7.7% (2/26) patients showing partial (50%-75%) repigmentation. Response to treatment was seen to correlate inversely with the duration of SV. Patients with SV of <6 months reported better results with all 10 cases achieving complete or near complete (>75%) repigmentation. In contrast, only 44% patients (7/16) with disease duration of >6 months were seen to have achieved >75% repigmentation.
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