Final answer:
A stellate ganglion block is a medical procedure used to treat certain conditions by injecting local anesthetic around the stellate ganglion in the neck. Side effects may include hoarseness, drooping eyelid, and difficulty swallowing.
Step-by-step explanation:
A stellate ganglion block, also known as a cervicothoracic sympathetic block, is a medical procedure used to treat conditions such as complex regional pain syndrome and Raynaud's disease.
The block is performed by injecting local anesthetic around the stellate ganglion, which is located in the neck.
Some possible side effects of the procedure include temporary hoarseness, drooping eyelid, and difficulty swallowing.