People with PTSD finding relief with a shot in the neck and last updated 2021-07-29 16:57:24-04 SAN DIEGO, Calif. â People who have post-traumatic stress disorder (PTSD) are finding relief with a single shot in the neck. The treatment, called stellate ganglion block (SGB), has been used to treat pain for nearly a century. And in recent years, it has been shown to reduce symptoms associated with PTSD significantly. Local anesthesia is injected near a bundle of nerves in the neck, called the stellate ganglion. These nerves are a key part of the sympathetic nervous system or our fight or flight response.