Treatment of trigeminal neuralgia and trigeminal neuropathy begins with pharmacotherapy. The most important role is played by anticonvulsants, which reduce the hyperexcitability of nerve fibers and interrupt pain attacks.
Antidepressants also serve an important function. They are not prescribed because the pain has a psychological basis, but because of their proven analgesic properties. They modulate conduction within the nervous system and change the way the body perceives pain.
For this reason, they are used in all forms of trigeminal neuralgia — both paroxysmal and continuous. They are frequently combined with anticonvulsants, which strengthens the therapeutic effect while allowing lower doses of each medication.
Anticonvulsants
They stabilize neuronal membranes and block the abnormal "electrical discharges" that cause sudden pain attacks.
First-line choices:
- Carbamazepine — the classic, most extensively studied option.
- Oxcarbazepine — similar mechanism, often better tolerated.
Alternatives and second-line options:
- Lamotrigine — particularly useful for continuous pain.
- Baclofen — a muscle relaxant that also modulates pain conduction.
- Gabapentin and Pregabalin — effective for constant neuropathic pain.
- Topiramate — used in more difficult cases.
- Phenytoin — less common today, but still occasionally used in refractory neuralgia.
Antidepressants
They modify pain signaling in the brain and spinal cord — functioning as a kind of "pain switch."
Tricyclic antidepressants (TCAs):
- Amitriptyline
- Nortriptyline
- Imipramine
Serotonin-norepinephrine reuptake inhibitors (SNRIs):
- Duloxetine
- Venlafaxine
Combination Therapy — Even More Effective
Many patients benefit from combining anticonvulsants with antidepressants.
Why?
- Both drug classes target different pain mechanisms.
- Lower doses of each can be used, reducing the risk of side effects.
- The analgesic effect is often stronger and more sustained than with monotherapy.
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 the difference between neuralgia and neuropathy?
In simple terms: neuralgia primarily involves paroxysmal pain along a nerve, usually without loss of sensation. Neuropathy involves nerve damage that more often causes constant pain along with numbness and sensory loss.
Do regular painkillers help with neuropathic pain?
Usually not. Neuropathic pain responds poorly to paracetamol or anti-inflammatory drugs. Instead, medications that act on nerves are used, such as anticonvulsants like carbamazepine.
How does carbamazepine work for trigeminal neuralgia?
Carbamazepine is the first-line medication for trigeminal neuralgia. In a large proportion of patients, it provides effective pain control. It requires gradual dose adjustment and medical supervision.
What is the difference between gabapentin and pregabalin?
Both are anticonvulsant medications used for neuropathic pain. They differ in absorption and dosing characteristics. The choice and dosage should be determined by a physician.
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