Comparison between high and low levels thoracic sympathectomy for the treatment of palmar and axillary primary hyperhidrosis: systematic review and meta-analysis.

Primary hyperhidrosis (PH) is a condition that has a great impact on affected individuals' quality of life, regardless of its location. Its surgical treatment is done through thoracic sympathectomy performed by videothoracoscopy. Standardization of the technique includes section of the sympathetic trunk at different levels, according to the site of symptoms. The aim of this review is to evaluate the efficacy of thoracic sympathectomy through a systematic literature review comparing sympathectomy at different levels of the sympathetic chain.