Trigeminal neuralgia is a neurological disorder that causes sudden, intense facial pain.

Attacks may feel like electric shocks, stabbing sensations, or burning and can be triggered by speaking, chewing, brushing the teeth, or lightly touching the face.

Appropriate treatment can help control symptoms and improve daily functioning.

What Is Trigeminal Neuralgia?

Trigeminal neuralgia affects the trigeminal nerve, which carries sensory information from much of the face to the brain. The nerve has three major branches serving areas of the forehead, cheek, jaw, teeth, and parts of the mouth.

In many cases, a blood vessel contacts or compresses the trigeminal nerve near the brainstem, disrupting normal nerve signaling. Other possible causes include multiple sclerosis, tumors, structural abnormalities, or previous nerve injury. In some people, no specific cause is identified.

Common Symptoms

The main symptom is sudden, severe facial pain. Individual attacks typically last from a fraction of a second to about two minutes and may occur repeatedly.

“Trigeminal neuralgia (TN) is a highly disabling disorder characterised by very severe, brief and electric shock like recurrent episodes of facial pain.” — Giorgio Lambru, Joanna Zakrzewska, and Manjit Matharu, Practical Neurology.

The pain may be described as:

- Electric-shock-like

- Stabbing or shooting

- Burning or aching

- Concentrated on one side of the face

Common triggers include chewing, talking, smiling, shaving, brushing the teeth, washing the face, or gentle contact with the skin. Some people may experience discomfort between attacks, although brief, recurrent episodes are the characteristic pattern.

How Is It Diagnosed?

Diagnosis is based primarily on the characteristics of the pain. A healthcare professional may ask about its location, duration, severity, frequency, and triggers. A neurological examination can also assess facial sensation and other nerve functions.

MRI may be recommended to investigate possible underlying causes and determine whether a blood vessel is contacting or compressing the trigeminal nerve. Imaging can also help identify conditions such as multiple sclerosis or a tumor.

Because several conditions can cause facial pain, establishing the correct diagnosis is important before treatment is selected.

Treatment Options

Treatment depends on the underlying cause, symptom severity, overall health, and response to previous therapies.

Medications

Anticonvulsant medicines can reduce abnormal nerve signaling and help control pain attacks. Carbamazepine and oxcarbazepine are commonly used options.

These medicines can cause side effects or interact with other medications, so treatment should be supervised by an appropriate healthcare professional.

Microvascular Decompression

When blood-vessel compression is responsible for the symptoms, microvascular decompression may be considered. During the procedure, the surgeon moves the blood vessel away from the trigeminal nerve and places protective material between them.

The procedure can provide substantial and sometimes long-lasting pain relief, although it involves surgical risks and is not suitable for everyone.

Other Procedures

When medication does not provide adequate relief, procedures such as radiofrequency treatment, balloon compression, glycerol injection, or focused radiation may be considered.

These treatments reduce or interrupt abnormal pain signaling. Their effectiveness, risks, effects on facial sensation, and likelihood of recurrence vary.

Managing Trigeminal Neuralgia

Keeping a record of pain attacks, triggers, medications, and treatment responses can help healthcare professionals assess changes over time.

If chewing triggers pain, softer foods may be easier to tolerate temporarily. Gentle facial care and avoiding known triggers may also make everyday activities more manageable.

New, recurrent, severe, or unexplained facial pain should be medically evaluated. Prompt assessment is particularly important when pain occurs alongside new neurological symptoms or other unusual changes.

The Bottom Line

Trigeminal neuralgia causes sudden, severe facial pain that can be triggered by ordinary activities. Blood-vessel contact or compression is a common cause, while other neurological conditions, structural abnormalities, and nerve injuries can also contribute. Diagnosis is based on the pattern of symptoms and may include neurological assessment and MRI. Treatment ranges from medication to specialized procedures and surgery, and appropriate care can provide meaningful pain relief for many people.