Objective To observe the effect and the safety of narrow-band ultraviolet B(NB-UVB) in the treatment of psoriasis vulgaris.

目的观察窄谱中波紫外线（NB-UVB）治疗寻常型银屑病的疗效及安全性。

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Objective To study the efficacy and safety of combined narrow band-ultraviolet B(NB-UVB) and tazarrotene gel in treatment of psoriasis vulgaris.

目的 探讨窄谱中波紫外线（NB-UVB） 联合他扎罗汀凝胶治疗寻常型银屑病的临床疗效及安全性。

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