<unk>  <unk>  is a surgical procedure in which a portion of the sympathetic nerve trunk in the<unk>  region is destroyed.<unk>  is used to treat excessive sweating in certain parts of the body (focal hyperhidrosis), facial blushing, Raynaud's disease and reflex sympathetic dystrophy. By far the most common complaint treated with<unk>  is sweaty palms (palmar hyperhidrosis). The intervention is controversial and illegal in some jurisdictions. Like any surgical procedure, it has risks; the<unk>  sympathetic block (ESB) procedure and those procedures that affect fewer nerves have lower risks.<unk>  physically destroys relevant nerves anywhere in either of the two sympathetic trunks, which are long chains of nerve ganglia located bilaterally along the vertebral column (a localisation which entails a low risk of injury) responsible for various important aspects of the peripheral nervous system (PNS). Each nerve trunk is broadly divided into three regions: cervical (neck),<unk>  (chest), and lumbar (lower back). The most common area targeted in<unk>  is the upper<unk>  region, that part of the sympathetic chain lying between the first and fifth<unk>  vertebrae.
Endoscopic thoracic sympathectomy
Intercostal nerve block
Cricopharyngeal myotomy
Pallidotomy
Targeted lung denervation
Pulmonary tractotomy
Hyperinflation therapy
Surgical airway management