What is a SPGB? How does it work?

This minimally invasive procedure is given to treat pain in the head and face. An injection of anesthetic to the Sphenopalatine Ganglion can reduce pain caused by TMJ, migraines, cancer in the mouth, and many other symptoms. Your physician will administer the injection a couple of times, first to conduct a diagnostic block, and then a therapeutic block.

Benefits from an SPGB

This treatment, if successful, will allow your doctor to determine the source of your pain. Typically a block will last for several months.

When will I see results?

After a positive diagnostic block, it is normal to feel immediate relief but to have pain return within a few hours. This is indication that giving a follow-up therapeutic treatment will yield beneficial results. Full relief after the therapeutic procedure can be felt sometime between a few days or 2 weeks.


There are a few different approaches that can be used.

Risk Factors

There is a risk of complication with any medical procedure. Take time to discuss treatment options and any questions you may have with your physician, before agreeing with a procedure.