Comparison between 308‐nm excimer light alone versus 308‐nm excimer light and platelet‐rich plasma in the treatment for localized vitiligo

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Monochromatic excimer light (MEL) is a safe and effective treatment for localized stable vitiligo. Previous reports of the combination of platelet-rich plasma (PRP) with narrowband ultraviolet B (NB-UVB) or excimer laser yielded conflicting results. This prospective, self-controlled, randomized, comparative study aimed to assess whether the addition of PRP to MEL therapy would be of an additive benefit in the treatment for localized stable vitiligo. Patients/Methods The current study included 36 patients with at least 2more or less symmetrical patches of localized stable vitiligo (72 patches). For each patient, each of the 2 vitiligo patches was randomly assigned to receive either MEL therapy (twice weekly) with bi-weekly intradermal PRP (group A) or MEL therapy alone (group B) for a maximum of 4months or till complete repigmentation. The degree of repigmentation was categorized as absent (0%), poor (1-25%), moderate (26-50%), good (51-75%), or excellent (>75%). Patients were asked about their level of satisfaction (not satisfied at all, partially satisfied, satisfied, or completely satisfied). Side effects were recorded, and follow-up for 3months was done. No statistically significant difference was observed between the 2groups regarding the degree of repigmentation, the patients' level of satisfaction, and the frequency of side effects (p=0.504, 0.490, and 0.912, respectively). At the end of the follow-up period, recurrence was observed in only 3 patients. The current study showed no statistically significant difference between using MEL alone or with intradermal PRP in the treatment for localized stable vitiligo.