Sphenopalatine Ganglion (SPG) Block:

Nerve blocks are injections of medication onto or near nerves, which block pain signals. Nerve blocks are used to relief pain from a variety of conditions, from a broad range of locations on the body. The medications that are injected include local anesthetics, steroids, and opioids.

The Sphenopalatine Ganglion (SPG) is a group of nerve cells located behind the nose that is linked to the trigeminal nerve, the main nerve involved in headaches. The SPG is also important for tearing and nasal congestion. This kind of block can help relieve symptoms of cluster and migraine headaches.

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