Compensatory sweating after thoracoscopic sympathectomy for primary focal hyperhidrosis: a series of 820 cases.

Objectives: Primary hyperhidrosis is a functionally and socially limiting condition. Thoracoscopic sympathectomy is an effective treatment for hyperhidrosis. However, post-sympathectomy compensatory sweating remains a challenge in clinical practice.

Methods: Record analysis of patients who underwent thoracoscopic sympathectomy between 2002 and 2020. Emphasis was given to demographic data, site of complaint, functional and social impairment, procedure performed, postoperative results and compensatory sweating.

Results: A total of 820 patients were included (age 23.8 [7.3] years, body mass index-BMI 22.3 [3.0] kg/m2, 66.3% female). The palmoplantar (44.3%) and palmoplantar-axillary (41.6%) sites were the most affected, followed by the axillary (12.3%) and craniofacial sites (1.8%). On a 0-4 scale, functional impairment was significantly greater in the palmoplantar group (P < 0.001) and social impairment in the axillary, palmoplantar-axillary and craniofacial groups (P < 0.001). The degree of compensatory sweating after surgery was minimal in groups palmoplantar (74.9%), palmoplantar-axillary (70.4%), axillary (63.4%) and mild in the craniofacial group (66.7%). The bivariate analyses showed significant differences in the compensatory sweating variable for age, sex, BMI and site. The multiple analysis by logistic regression showed BMI, sex and the palmoplantar-axillary, axillary and craniofacial variables to be significant for compensatory sweating.

Conclusions: Thoracoscopic sympathectomy was an effective procedure for controlling primary focal hyperhidrosis, with tolerable compensatory sweating in the patients analysed in this study.