Trigeminal Neuralgia

The short version

●Trigeminal neuralgia (TN) causes sudden, brief, electric-shock or stabbing pain in the face, often triggered by light touch, chewing, talking, or wind.
●It follows the trigeminal nerve's branches and is one of the most distinctive — and distressing — facial pain syndromes.
●It is often caused by a blood vessel compressing the trigeminal nerve; MRI is used to evaluate this and rule out other causes.
●First-line treatment is the anticonvulsant carbamazepine (or oxcarbazepine), not ordinary painkillers, which do not work.
●When medication fails, surgical options — especially microvascular decompression — can be highly effective.
●Ketamine is not first-line; NMDA-antagonist analgesia has only a narrow, limited evidence base, so TN care belongs with neurology and pain/neurosurgery specialists.

Clinical definition

Trigeminal neuralgia is a neuropathic facial pain disorder defined by recurrent, paroxysmal, unilateral, brief (a fraction of a second to two minutes) electric-shock-like pains in one or more divisions of the trigeminal nerve, typically triggered by innocuous stimuli (light touch, chewing, speaking, cold air). It is frequently caused by neurovascular compression of the trigeminal root (classical TN), may be secondary to multiple sclerosis or a tumor, or idiopathic. Between attacks patients are often pain-free, though some develop concomitant continuous pain. Diagnosis is clinical, with MRI to identify neurovascular compression and exclude secondary causes.

How it differs from related conditions

vs. Cluster headache

Cluster attacks are longer (15–180 min) with autonomic features and restlessness, versus TN's split-second, touch-triggered shocks.

vs. Neuropathic pain

TN is a specific neuropathic pain syndrome with its own first-line drug (carbamazepine) and surgical options.

vs. Migraine

Migraine is a throbbing head pain with nausea and light sensitivity, not the brief electric facial jolts of TN.

First-line treatments

Carbamazepine / oxcarbazepine

First-line and often dramatically effective; ordinary analgesics and opioids do not work for TN.

Other anticonvulsants/adjuncts

Lamotrigine, baclofen, or gabapentin/pregabalin as add-ons or alternatives when first-line is not tolerated.

Microvascular decompression (surgery)

For classical TN from vascular compression, the most durable treatment with high success rates.

Ablative procedures

Gamma Knife radiosurgery or percutaneous rhizotomy for those who are not surgical candidates.

When standard treatments fail

When carbamazepine and other anticonvulsants fail or are not tolerated, the European Academy of Neurology and others recommend timely consideration of surgery — microvascular decompression for neurovascular compression, or ablative procedures (radiosurgery, rhizotomy). NMDA-antagonist analgesia, including ketamine, has only a narrow and inconsistent evidence base in refractory neuropathic pain and is not a standard TN treatment.

Where ketamine fits

Trigeminal neuralgia is not a condition Tovani treats, and ketamine is not a first-line — or well-established — treatment for it. The cornerstone of TN care is the anticonvulsant carbamazepine, with surgical options (especially microvascular decompression) when medication fails, per neurology guidelines.¹ ² Ketamine, an NMDA antagonist, has been studied as an analgesic in neuropathic pain broadly, but the evidence is limited and inconsistent and does not establish a role in TN specifically.³ Anyone with trigeminal neuralgia is best served by a neurologist and, where appropriate, a neurosurgeon or pain specialist — not an at-home ketamine program.

Where this fits with Tovani

Tovani's scope is mood, anxiety, PTSD, and certain chronic pain conditions; trigeminal neuralgia is a neurology- and neurosurgery-managed facial pain syndrome with its own specific, effective treatments. If you have TN, the priority is the right diagnosis (including MRI) and carbamazepine, with surgery considered early if medication fails. This page exists to point you toward that care rather than toward ketamine, which has no established role in TN.

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Frequently asked

Can ketamine treat trigeminal neuralgia?

It is not an established treatment. TN's first-line treatment is the anticonvulsant carbamazepine, and surgery (microvascular decompression) when medication fails. Ketamine's analgesic evidence in neuropathic pain is limited and does not establish a role in TN specifically.

What actually works for trigeminal neuralgia?

Carbamazepine or oxcarbazepine is first-line and often very effective — ordinary painkillers do not work. When medication fails or is not tolerated, surgery (especially microvascular decompression) can be highly effective and durable.

Why don't normal painkillers help?

TN is neuropathic — it comes from misfiring of the trigeminal nerve, often from a blood vessel pressing on it — so it responds to nerve-stabilizing anticonvulsants rather than to standard analgesics or opioids.

Does Tovani treat trigeminal neuralgia?

No — it is managed by neurology and neurosurgery, which have specific, effective treatments for it. We would point you to a neurologist (and MRI to check for nerve compression) rather than offer ketamine, which has no established role here.

References

Bendtsen L et al. 2019, European Journal of Neurology — European Academy of Neurology guideline on trigeminal neuralgia. (PMID 30860637)
Cruccu G et al. 2008, European Journal of Neurology — AAN-EFNS guidelines on trigeminal neuralgia management. (PMID 18721143)
Umbacia MA et al. 2025, Journal of Pain & Palliative Care Pharmacotherapy — Systematic review of ketamine as an analgesic therapy (limited evidence in neuropathic pain). (PMID 40306314)

Last reviewed by Dr. Ben Soffer, DO on June 2, 2026. This page is educational and not a substitute for clinical evaluation. A physician determines whether ketamine therapy is appropriate for your specific situation.