Associated Factors and Treatment Outcomes of Hori's Nevus Treated with Lasers
Van Lam Nguyen1, Ngoc Linh Quach1, Huu Giau Nguyen1
1Faculty of Medicine, Can Tho University of Medicine and Pharmacy, Nguyen Van Cu, Can Tho, Vietnam.
Background:
Treatment of Hori's nevus can help reduce psychological burden, restore normal skin, improve aesthetics, and quality of life for patients. However, studies related to the morphological characteristics and effectiveness of Hori's nevus treatment are still limited in Vietnam.
Objective:
The objective of this study is to investigate some factors related to the degree of pigmentation of Hori's nevus and evaluate the results of Hori's nevus treatment with Pico Nd:YAG laser and Q-switched Nd:YAG laser.
Methods:
A descriptive study of a series of cases was conducted on patients diagnosed with Hori's nevus who visited Can Tho Dermatology Hospital and FOB International Dermatology and Aesthetic Research Institute, Can Tho City, Vietnam, from March 2021 to June 2023.
Results:
The study results showed that 53.7% of patients with Hori's nevus had grade III hyperpigmentation; The predominant color was blue-brown (46.3%); 100% of patients had lesions on both cheeks. Older age (p=0.008), frequent sun exposure (p=0.001), non-using sunscreen (p=0.031), and not wearing masks (p<0.001) were statistically significantly associated with greater pigmentation of Hori's nevus. In the Pico Nd:YAG laser treatment group, the lesion color score decreased from 26.62±1.9 before treatment to 21.9±2.6 after 7-10 treatments (p<0.001). In the Q-switched Nd:YAG laser treatment group, the lesion color score decreased from 27.29±1.3 before treatment to 22.13±2.3 after 7-10 treatments (p<0.001).
Conclusion:
The study showed that Hori's nevus is common in people over 30 years old and often exposed to sunlight. Two laser methods have been effectively applied in treatment. Measures such as protecting the skin from the sun and using sunscreen and masks can prevent or reduce the progression of Hori's nevus. These two methods can be applied in Vietnam depending on the conditions of the medical facility.
