Sphenopalatine Ganglion Block

Other names: SPG Block

Categories: Surgical

Description:

A sphenopalatine ganglion (SPG) block is a non-invasive or minimally invasive procedure used for acute migraine treatment, particularly in patients with severe or refractory headaches. It involves delivering a local anesthetic (usually lidocaine) to the SPG, a nerve cluster located deep in the nasal cavity, using a cotton swab, catheter, or spray. The block works by interrupting pain and autonomic pathways involved in migraine attacks. Relief is often rapid, sometimes within minutes, and the procedure is generally well tolerated. SPG blocks are increasingly used in emergency and outpatient settings as a non-systemic alternative to medications.

Treatment For:

Migraine headache

AI generated Summary: The Sphenopalatine Ganglion Block (SPG block) has been shown to provide rapid relief for acute migraine headaches, especially when accompanied by autonomic symptoms such as tearing or nasal congestion. Research suggests that SPG blocks may be particularly effective for treating status migrainosus and are more commonly used for frontotemporal or trigeminal-dominant headaches, while occipital nerve blocks are preferred for targeting posterior or cervicogenic components.

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Average rating: 3/5

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All Physician Healthcare provider (non-physician) Healthcare Consumer (Patients & Caregivers)

Dr. Curbside

May 25, 2025

3.0

Research shows SPG blocks can provide rapid relief in acute migraine, particularly with autonomic symptoms like tearing or nasal congestion, and may be effective in status migrainosus. Compared to occipital nerve blocks, SPG blocks are more commonly used for frontotemporal or trigeminal-dominant headaches, while occipital blocks target posterior or cervicogenic components. Choice depends on headache location and symptom profile.

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