What is Trigeminal Neuralgia?

Trigeminal neuralgia (TN), sometimes called tic douloureux, is one of the most painful conditions affecting the face. It is characterised by sudden attacks of intense, electric shock-like or stabbing pain affecting one side of the face. The pain most commonly involves the cheek or jaw but may also affect the forehead.

Each episode typically lasts from a few seconds to several minutes and may be triggered by everyday activities such as talking, eating, brushing your teeth, shaving or even a light breeze across the face. Between attacks, many patients are completely pain free.

Although trigeminal neuralgia is uncommon, it can have a profound impact on quality of life, affecting eating, speaking, sleeping, work and social interactions.

The good news is that trigeminal neuralgia is one of the most treatable conditions in neurosurgery. With the correct diagnosis and appropriate treatment, many patients experience complete, immediate and long-lasting relief from their pain.

What Causes Trigeminal Neuralgia?

In most patients, trigeminal neuralgia occurs because an artery, or less commonly a vein, presses against the trigeminal nerve where it exits the brainstem. Over many years, this repeated pulsation damages the protective covering of the nerve, allowing abnormal pain signals to develop.

Less commonly, trigeminal neuralgia may be caused by multiple sclerosis, tumours, vascular abnormalities or previous injury to the trigeminal nerve.

​How is Trigeminal Neuralgia Diagnosed?

The diagnosis of trigeminal neuralgia is based primarily on a careful clinical history and neurological examination.

A high-quality MRI scan is usually performed to identify whether a blood vessel is compressing the trigeminal nerve and to exclude less common causes such as multiple sclerosis or a tumour.

Not every patient with facial pain has trigeminal neuralgia. Other conditions, including dental disease, temporomandibular joint disorders, migraine and atypical facial pain, can produce similar symptoms. Establishing the correct diagnosis is therefore the first and most important step towards successful treatment.

What Happens if Trigeminal Neuralgia is Left Untreated?

One of the most frustrating aspects of trigeminal neuralgia is that it often begins with intermittent attacks separated by weeks or months without pain. Because of this, many patients initially believe the condition has resolved.

Unfortunately, the pain commonly returns and, over time, episodes often become more frequent, more severe and increasingly difficult to control with medication.

Because trigeminal neuralgia is relatively uncommon, many patients undergo repeated dental procedures or consultations with multiple healthcare providers before the correct diagnosis is established. Early recognition by an experienced neurologist or neurosurgeon can prevent unnecessary procedures and allow appropriate treatment to begin sooner.

Do All Patients Need Surgery?

Not every patient with trigeminal neuralgia requires surgery.

Medication remains the first-line treatment, most commonly carbamazepine (Tegretol) or oxcarbazepine. These medications are often highly effective during the early stages of the condition.

Over time, however, medications may become less effective or produce unacceptable side effects such as dizziness, drowsiness, poor balance and memory difficulties.

Surgery is generally considered when facial pain is no longer adequately controlled or when medication side effects significantly affect quality of life.

Every treatment recommendation is individualised.

​What Are the Treatment Options?

Several effective treatment options are available, including medication, botulinum toxin injections, microvascular decompression, percutaneous procedures and stereotactic radiosurgery. The most appropriate option depends on the diagnosis, MRI findings, response to medication, overall health and individual treatment goals.

Medical Therapy

Medication remains the first-line treatment and is often highly effective, particularly during the early stages of the disease.

Microvascular Decompression (MVD)

Microvascular decompression is considered the gold standard surgical treatment for medically refractory classical trigeminal neuralgia.

The operation involves gently separating the compressing blood vessel from the trigeminal nerve and placing a small protective cushion between them.

Unlike destructive procedures, microvascular decompression addresses the underlying cause of classical trigeminal neuralgia while preserving normal nerve function.

For appropriately selected patients, it offers the highest likelihood of immediate, durable and medication-free pain relief.

Botulinum Toxin (Botox®) Injections

Botulinum toxin (Botox®) injections may provide temporary pain relief for selected patients with trigeminal neuralgia, particularly when medication is ineffective or poorly tolerated. The effects are temporary and repeat injections are often required. Botox does not correct the underlying nerve compression and is therefore not considered a definitive treatment for classical trigeminal neuralgia.

Percutaneous Procedures

Balloon compression, radiofrequency rhizotomy and glycerol rhizotomy may provide effective pain relief for selected patients, particularly those who are older, medically frail or unsuitable for major surgery.

These procedures intentionally damage part of the trigeminal nerve and therefore carry a greater likelihood of facial numbness. Pain relief may also diminish over time.

Stereotactic Radiosurgery

Stereotactic radiosurgery (Gamma Knife or LINAC) offers a non-invasive treatment option for selected patients.

Pain relief usually develops gradually over several weeks or months. While effective for many patients, long-term pain control is generally less durable than after successful microvascular decompression.

Which Treatment is Best?

There is no single treatment that is appropriate for every patient.

The most appropriate treatment depends on the type of trigeminal neuralgia, MRI findings, patient age, overall health, previous treatments and long-term goals.

For patients with classical trigeminal neuralgia caused by vascular compression of the nerve, microvascular decompression offers the greatest likelihood of durable, medication-free pain relief while preserving normal nerve function.

The goal is not simply to relieve pain, but to restore quality of life by recommending the treatment that offers the greatest long-term benefit while preserving normal nerve function whenever possible.

Why Seek an Early Specialist Opinion?

Persistent facial pain should never be ignored.

Early specialist assessment helps confirm the diagnosis, exclude other causes of facial pain, review MRI findings and discuss all appropriate treatment options before pain becomes increasingly difficult to control.

For many patients, simply understanding the cause of their symptoms and learning that effective treatments are available provides enormous reassurance and hope.

Why Choose Professor Lai?

Successful treatment of trigeminal neuralgia begins with making the correct diagnosis. Not every patient with facial pain has trigeminal neuralgia, and not every patient with trigeminal neuralgia requires surgery. Careful clinical assessment and detailed MRI review are essential to identifying the underlying cause of the pain and determining the most appropriate treatment.

Professor Lai has extensive experience in the assessment and microsurgical treatment of trigeminal neuralgia. For patients with classical trigeminal neuralgia caused by vascular compression, microvascular decompression offers the highest likelihood of immediate, durable and medication-free pain relief while preserving normal nerve function.

For appropriately selected patients, more than 95% experience immediate pain relief following surgery and are able to discontinue pain medication within the weeks after their operation. Most continue to enjoy excellent long-term pain control for many years.

Patients are referred from across Melbourne, regional Victoria, throughout Australia and overseas for both primary treatment and complex second opinions. Every recommendation is guided by sound clinical judgement, the best available evidence and a commitment to recommending the right treatment for the right patient.

Frequently Asked Questions

Is trigeminal neuralgia permanent?

Not necessarily. While the condition often becomes progressively worse without treatment, many patients achieve excellent long-term pain relief with medication or surgery.

Is trigeminal neuralgia caused by stress?

No. Stress does not cause trigeminal neuralgia, although stress, fatigue and anxiety may make painful episodes more frequent or more difficult to cope with. Classical trigeminal neuralgia is most commonly caused by compression of the trigeminal nerve by a blood vessel.

Will medication eventually stop working?

Medication is often highly effective initially, but some patients experience reduced effectiveness over time or develop side effects that limit long-term use.

Will I need surgery?

Not always. Many patients achieve satisfactory pain control with medication alone. Surgery is generally considered when medication is no longer effective or causes unacceptable side effects.

Can Botox help trigeminal neuralgia?

Botulinum toxin injections may reduce the frequency and severity of pain attacks in selected patients. However, the effect is usually temporary and repeat injections are often required. Botox does not address the underlying cause of classical trigeminal neuralgia and is generally considered an adjunctive rather than definitive treatment.

How successful is microvascular decompression?

For carefully selected patients with classical trigeminal neuralgia, microvascular decompression provides immediate pain relief in the vast majority of patients. More than 95% of Professor Lai’s patients are able to discontinue pain medication within weeks of surgery, and most continue to enjoy durable long-term pain relief.

Will I have facial numbness after surgery?

One of the major advantages of microvascular decompression is that it treats the underlying cause of the pain while preserving normal nerve function. Unlike destructive procedures, facial numbness is uncommon.

Can trigeminal neuralgia come back?

Some patients experience recurrence of pain over time, although many continue to enjoy durable long-term pain relief. If pain recurs, further treatment options remain available.

Should I get a second opinion?

Yes. Because several treatment options are available and not every patient requires surgery, specialist assessment can help confirm the diagnosis and identify the treatment most likely to provide lasting pain relief.

No one should have to live with debilitating facial pain. With an accurate diagnosis and the right treatment, many patients experience immediate pain relief and return to eating, speaking and living normally again. Careful assessment by an experienced neurosurgeon is the first step towards restoring comfort, confidence and quality of life.

Video