Stellate ganglion is located at the level of C7, anterior to the transverse process of C7 and the neck of the first rib, superior to the cervical pleura and just below the subclavian artery.

Stellate ganglion block also shows great potential as a means of reducing the number of hot flashes and night awakenings suffered by breast cancer survivors and women experiencing severe symptoms of menopause.

Complications associated with a stellate ganglion block include Horner's syndrome, accidental intra-arterial or intravenous injection, difficulty swallowing, vocal cord paralysis, epidural spread of local anaesthetic, and pneumothorax.

[7] There are current investigations into stellate ganglion block for those suffering from altered sense of smell and taste due to COVID-19 infection.

However, this therapy is only offered to patients who are already on a beta blocker and experience frequent shocks from an implantable cardioverter-defibrillator (ICD), because stellectomy causes Horner's syndrome.