http://www.laparoscopyhospital.com/ Thoracoscopic Sympathectomy involves cauterizing (cutting and sealing) a portion of the sympathetic nerve chain that runs down the back inside the chest, parallel to the spine. This operation permanently interrupts the nerve signal that is causing the body to sweat excessively. A small camera device, or video scope, is placed through the incision in order to see inside the chest and identify the sympathetic nerve chain. Through the scope, a cautery device to cut and seal the appropriate level, as determined in advance by the person's symptoms, is placed. The incision is closed with sutures that will eventually dissolve on their own. The patient is usually released the same day and usually can return to work or school within a few days.