LASER 532-NM ND:YAG PICOSECOND IN TREATMENT OF SOLAR LENTIGO AND EPHELIDES

Abstract

Aims: To evaluate the efficacy, side effects of laser 532-nm Nd:YAG picosecond in treating solar lentigo and ephelides at HCMC hospital of dermato-venereology. Objectives and Method: Prospective - descriptive study. There were 43 patients dealing with solar lentigo and ephelides treated with laser 532-nm Nd:YAG picosecond. Each patient went through 3 treatments with one month interval, three months follow up for delayed side effects and recurrent. Evaluating the treatment by MI, VLCS, self-patient evaluation with 5 grades scale. Evaluating side effects of the treatment by 5 grade Wong-Baker scale. Collected data were analysed with SPSS.20.0. Results: Based on MI at the end of the study, the effectiveness of the treatment gained 81.4% good, 16.3% average and 2.3% bad. Self-patient evaluation revealed 76.7% good, 20.9% average and 2.3% bad. VLCS of post-treatment reduced 7.44 ± 2.14 unit compares with of pre-treatment. Recently after treatment, 100% patients had erythema and mild pain in 5 grade Wong-Baker scale, 20.9% had mild edema, 2.3% had post imflammatory hyperpigmentation (PIH). Two ephelides cases recurred 3 months after treatment (4.6%). Conclusions: Laser 523-nm Nd:YAG picosecond has high efficacy and less side effects in treating solar lentigo and ephelides. Key words: solar lentigo, ephelides, laser 532-nm Nd:YAG picosecond