Abstract：
Laser hair removal is a commonly used method in dermatology which is based on selective thermolysis and utilizes the appropriate wavelength, pulse width, and energy density to damage hair follicles. Given the prevalence of skin diseases such as psoriasis, dermatitis, and vitiligo, and the increasing popularity of laser hair removal, the aim of this study was to investigate the safety of laser hair removal in individuals with skin diseases. This retrospective study was conducted at the laser department of Razi Hospital on 99 patients who underwent laser hair removal. The exacerbation of disease after laser therapy was significantly associated with active skin disease (p = .021) and laser treatment at the site of the disease (p < .001). The incidence of Koebner phenomenon was significantly associated with age (p = .017) and the number of sessions with the ND-YAG device (p = .034). It is crucial to exercise caution when performing laser treatment on individuals with active skin disease and to avoid treating the affected area were possible. If necessary, it is recommended to delay laser treatment until the disease is under control for patients with active skin disease or those who wish to receive laser treatment at the site of the disease.
摘要：
激光脱毛是皮肤病学中一种常用的方法，它基于选择性热解并利用适当的波长，脉冲宽度,和能量密度损害毛囊。鉴于皮肤病如牛皮癣的患病率，皮炎,和白癜风,以及激光脱毛的日益普及，这项研究的目的是调查皮肤疾病患者激光脱毛的安全性。这项回顾性研究是在拉齐医院激光科对99例接受激光脱毛的患者进行的。激光治疗后疾病的恶化与活动性皮肤病（p=.021）和疾病部位的激光治疗（p<.001）显着相关。Koebner现象的发生率与年龄（p=.017）和ND-YAG装置的治疗次数（p=.034）显着相关。在对患有活动性皮肤病的个体进行激光治疗时，谨慎行事至关重要，避免治疗受影响的区域是可能的。如有必要,对于患有活动性皮肤病或希望在疾病部位接受激光治疗的患者，建议推迟激光治疗，直到疾病得到控制。
