This chapter is a question and answer style article that contains past FRCA paper examples related to neurosurgery, neuroradiology and neurocritical care. It also guides trainees on the most effective manner in which to approach these questions. The discussion covers the following: the indications for endoscopic thoracic sympathectomy (ETS). (25%); the general (30%) and airway (15%) implications of managing a patient for ETS under general anaesthesia; the most likely problems to be encountered in the intraoperative (15%) and postoperative (15%) period.