Psoralen and narrowband UVB combination provides higher efficacy in treating vitiligo compared with narrowband UVB alone: A randomised clinical trial.

Abstract

Side effects of current treatments and the need for a safe treatment with higher efficiency necessitate seeking new treatment options for vitiligo. Few studies have investigated the combination of psoralen with narrowband ultraviolet B (NBUVB). In this study, we compared the efficacy and safety of psoralen and NBUVB combination (P-NBUVB) with NBUVB alone in treatment of vitiligo. This randomised clinical trial was carried out during 2015-2017 in dermatology clinics of Ghaem and Imam Reza hospitals, Mashhad, Iran on 40 vitiligo patients with 5-60% body involvement. The patients were randomly divided into two groups of NBUVB alone and P-NBUVB. Both groups underwent 60 phototherapy sessions (three sessions per week), and the repigmentation rate was measured using vitiligo area severity index (VASI) score. SPSS v. 16 software and appropriate statistical tests were used to analyse the data. P<0.05 was considered statistically significant. The mean age of patients was 33.9±11.3years. Twenty patients (50%) were females. The P-NBUVB group showed greater VASI improvement in lower extremities (P=0.003) and overall (P=0.026) compared with NBUVB group. Moreover, the treatment response appeared sooner in P-NUVB group. Based on our results, we can conclude that adding psoralen to NBUVB phototherapy can result in increased efficacy. However, more studies are needed to evaluate the long-term effects and side effects of this treatment.