Hiệu quả và an toàn của laser xung dài Nd:YAG đơn trị hoặc kết hợp với laser Q-switched Nd:YAG trong điều trị mụn trứng cá

To define the efficacy and safety of long-pulsed 1,064nm Nd:YAG laser alone or combined with Q-switched 1,064nm Nd:YAG laser in the treatment of acne vulgaris. Subject and method: A randomized, split-face clinical trial in 30 patients with acne vulgaris. Result: Females were dominant (83.3%) and the mean age was 21.7 ± 4.7 years old. In the group using long-pulsed 1,064nm Nd:YAG laser, 56.7% and 6.7% of patients were in grade 3 and grade 4 before treatment, respectively. After 4 treatments, no patients were in grade 4, whereas 6.7%, 33.3%, and 56.7% of patients were in grades 3, 2, and 1, respectively. In the group combined with Q-switched 1,064nm Nd:YAG laser, 60% of patients were in grade 3 in the first time of treatment, while only 6.7% of patients were in grade 4. After the final treatment, no patients were in grade 4, but 3.3% of patients were in grade 3, 23.3% of patients were in grade 2, and 66.7% of patients were in grade 1. No side effects for both groups were not seen. Conclusion: Mono and combined laser therapy were effective in the treatment of acne vulgaris.