Application of Dermoscopy for Efficacy Assessment and Prognosis in Laser Treatment of Vasodilator Dermatosis

Xiaoye Liu¹manli qi^2*yajun zhang¹huijuan wang¹weiwei xv¹Guoqiang Zhang^1*

• ¹The First Hospital of Hebei Medical University, Shijiazhuang, China
• ²Tianjin Union Medical Center, tianjin, China

Objective: Analyse dermoscopic image data before and after laser treatment for vasodilator dermatosis. Investigate its value in evaluating post-treatment efficacy and identifying factors predictive of complete lesion clearance in a single session. Methods: Patients undergoing laser treatment for vascular skin disorders in our department were selected. Dermoscopic images of the lesions were captured and the vascular characteristics within the dermoscopic field were recorded. One-month follow-up analyses assessed lesion clearance status and dermoscopic features in each patient. Results: This study included 18 patients (37 lesions in total). The total vascular feature scores before and after treatment were significantly different from the individual vascular scores. The single-session clearance rate at one-month follow-up was 75.7% (28/37). Significant differences in scores were observed between the cleared and uncleared groups. Univariate and multivariate logistic analyses identified vascular colour as an independent factor influencing lesion clearance. Calculating the Youden index showed that lesions with scores below 9.5 were more likely to be cleared in a single session. Conclusion: Prior to laser treatment, using a dermatoscope to comprehensively assess the characteristics of vascular structures provides an objective evaluation of the underlying vascular condition. This makes it possible to predict the likelihood of achieving complete clearance in a single session after laser therapy, providing insights into how to devise personalised treatment plans for patients. The clinical promotion and application of this method is eagerly awaited.