Thoracic sympathectomy is used for the palliation of hyperhidrosis. However, significant controversies surround the optimal surgical approach and the extent of sympathectomy. The determinants of success in the surgical palliation of hyperhidrosis are the postoperative rate of anhidrosis, recurrence of symptoms, and rate of compensatory hyperhidrosis. This paper attempts to shed light on the controversies by examining the historic background, clearly defining the anatomic considerations, and outlining the various surgical approaches culminating with robotic selective dorsal thoracic sympathectomy.