Nerve blocks in trigeminal neuralgia are a quick and often effective method of pain relief. Although they do not work for everyone and are not a definitive solution, for many patients they bring a significant improvement in quality of life — especially when medications are insufficient or cause troublesome side effects. The procedure can provide relief after the very first treatment, and sometimes allows pain-free functioning for weeks or months.
What Is a Nerve Block?
A nerve block involves injecting a specialized preparation near the nerve — an anesthetic, often combined with a corticosteroid.
- The anesthetic numbs the nerve and interrupts pain conduction.
- The corticosteroid reduces inflammation and extends the duration of the block.
The procedure is performed with a thin needle, usually under ultrasound guidance, to ensure precise delivery of the medication.
Which Nerves Can Be Blocked?
The trigeminal nerve has three branches — depending on the location of pain, different sites are targeted:
- Ophthalmic branch (V1) — supraorbital and supratrochlear nerve blocks (forehead and periorbital pain).
- Maxillary branch (V2) — infraorbital nerve block (cheek and upper jaw pain).
- Mandibular branch (V3) — mental, inferior alveolar, and lingual nerve blocks (jaw, chin, and lower teeth pain).
In classical trigeminal neuralgia, blocks may also be performed closer to where the nerve exits the skull.
When Are Blocks Considered?
Nerve blocks are performed when:
- pain attacks are very severe and do not respond to medication,
- the patient cannot take oral medications (e.g., during pregnancy, or with kidney, gastric, or liver disease),
- postherpetic neuralgia, migraines, or other facial pain conditions are present,
- there is a need to rapidly interrupt an exceptionally severe pain episode.
What Are the Results?
- In many patients, pain resolves immediately.
- The effect may last from a few days to several months, sometimes even longer.
- The need for oral medications is reduced.
- After the procedure, patients typically function normally — they can return to work or drive.
Is It Safe?
Nerve blocks are a minimally invasive and relatively safe method.
Possible but rare side effects include:
- hematoma or bruising at the injection site,
- temporary skin numbness.
Serious complications are extremely rare, particularly when the procedure is performed by an experienced physician under ultrasound guidance.
Limitations and Next Steps
- Blocks do not always work and do not always provide lasting relief.
- In some patients, the procedure needs to be repeated.
- If relief is short-lived, the physician may suggest alternative methods:
- cryoablation (freezing the nerve),
- radiofrequency thermoablation (heating the nerve with radiofrequency waves),
- neurosurgical procedures, such as CyberKnife or Gamma Knife.
Natalia — since 2014 I've been living with trigeminal nerve pain. I write in plain language, based on reliable sources and personal experience. Read my story →
Frequently Asked Questions
What is trigeminal neuralgia?
Trigeminal neuralgia is a chronic facial pain condition. It manifests as sudden, severe, usually one-sided pain attacks — often described as an electric shock. A single attack typically lasts from a few seconds to about two minutes.
What is postherpetic neuralgia?
This is chronic nerve pain following shingles (herpes zoster), resulting from nerve damage caused by the virus. It is a distinct condition and can be challenging to treat.
Can trigeminal neuralgia be cured?
In many people, pain can be effectively controlled with medications or procedures, and MVD provides the most durable results in eligible patients. The course varies — with periods of remission and relapse. Decisions are made together with your doctor.
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