• da SilvaMarcelo Fiorelli AlexandrinoMFA0000-0002-0714-5291MD. Attending Physician, Department of Vascular and Endovascular Surgery, Hospital Israelita Albert Einstein, São Paulo (SP), Brazil., Andressa Cristina Sposato Louzada, Marcelo Passos Teivelis, Nickolas Stabellini, Dafne Braga Diamante Leiderman, de CamposJosé Ribas MilanezJRM0000-0002-2385-7707MD, PhD. Associate Professor, Department of Surgery, Faculdade de Medicina, Universidade de São Paulo (USP), São Paulo (SP), Brazil., Amaro JuniorEdsonE0000-0002-5889-1382MD, PhD. Associate Professor, Department of Radiology, Faculdade de Medicina, Universidade de São Paulo (USP), São Paulo (SP), Brazil., and Nelson Wolosker.
• MD. Attending Physician, Department of Vascular and Endovascular Surgery, Hospital Israelita Albert Einstein, São Paulo (SP), Brazil.
• Sao Paulo Med J. 2022 Nov 1; 140 (6): 775780775-780.

BackgroundEndoscopic thoracic sympathectomy is the definitive surgical treatment for hyperhidrosis and a nationwide study has suggested that cultural and socioeconomic factors play a role in the numbers of operations performed. Thus, there is a need to evaluate local data in order to understand the local epidemiology and trends in hyperhidrosis treatment.ObjectiveTo study the epidemiology of sympathectomy for treating hyperhidrosis in São Paulo, the largest city in Brazil.Design And SettingPopulation-based retrospective cross-sectional study.MethodsData on sympathectomies for treating hyperhidrosis between 2008 and 2018 were assessed from the database of the Municipal Health Department of São Paulo, Brazil.Results65.29% of the patients were female, 66.2% were aged between 20 and 39 years and 37.59% had registered with addresses outside São Paulo. 1,216 procedures were performed in the city of São Paulo from 2008 to 2018, and 78.45% of them were in only two public hospitals. The number of procedures significantly declined over the years (P = 0.001). 71.63% of the procedures were associated with 2-3 days of hospital stay, only 78 intensive care unit days were billed and we did not observe any intra-hospital death.ConclusionThe profile of patients operated on in São Paulo (young women) is similar to that described in other populations. Sympathectomy is a very safe procedure, with no mortality in our series. There was a decreasing trend in the number of surgeries over the years.

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