Randomized double-blind trial of treatment of vitiligo: efficacy of psoralen-UV-A therapy vs Narrowband-UV-B therapy.

Objective: To compare the efficacy of oral psoralen-UV-A (PUVA) with that of narrowband-UV-B (NB-UVB) phototherapy in patients with nonsegmental vitiligo.

Design: Double-blind randomized study.

Setting: Phototherapy unit in a university hospital.