紫外线照射,尤其与补骨脂素合用时(称为PUVA),可调节免疫细胞的功能,是治疗银屑病和其他皮肤病的有效方法。有人报告用该法治疗皮肤扁平苔藓亦有效。本研究采用随机对照的方法,评价PUVA对长期有严重症状的OLP的疗效。 Ultraviolet radiation, especially when combined with psoralen (called PUVA), regulates the function of immune cells and is an effective treatment for psoriasis and other dermatological conditions. It is also reported that the treatment of lichen planus with this method is also effective. This study used a randomized controlled trial to evaluate the efficacy of PUVA in the treatment of long-term severe OLP.