Introduction: Primary focal hyperhidrosis is due to hypersympathetic state, occurring when psychological changes (nervousness, anxiety...) or environmental temperature increases. Characteristics of primary hyperhidrosis are localized to each area of the body, symmetrical on both sides. This disease is not life-threatening, but it greatly reduces the patient’s quality of life. Increased hand sweating affects the function of the hands at work, and also causes psychological guilt when communitating. In Vietnam, the prevalence is 1%, in the United States this rate is 2.8-3%. Endoscopic thoracic sympathectomy is the treatment method of choice and is considered the most effective today.
Objective: Our study was conducted to evaluate the results of sympathectomy in the treatment of focal hyperhidrosis.
Research methods: Retrospective and cross-sectional descriptive study.
Results: The rate of eliminating hyperhidrosis in the palm reached 97.1%, in the armpit reached 100%. After T2-3-4 resection, the rate of leg hyperhidrosis also decreased by 20.3%. Conclusion: Thoracoscopic sympathectomy (ETS) is a safe and convenient surgery, has a simple
postoperative period, does not have serious complications like open surgery and improves patient's quality of life.