Microvascular Decompression for Trigeminal Neuralgia

Medically reviewed by Stephen A. Johnson, MD ·Last reviewed: January 2, 2026 ·4 min read

Fellowship-trained cranial neurosurgeons • 12 hospital affiliations across New Jersey

In short

Microvascular decompression (MVD) is a posterior fossa microsurgical procedure that relieves trigeminal neuralgia by moving the blood vessel compressing the trigeminal nerve away from the nerve and placing a small Teflon cushion between them to prevent future contact. Unlike ablative procedures, MVD preserves the trigeminal nerve and treats the underlying cause of pain, providing the most durable long-term pain relief for appropriately selected patients.

Key takeaways

Microvascular decompression is the only surgical treatment for trigeminal neuralgia that relieves pain by correcting the underlying neurovascular compression rather than intentionally injuring the nerve.
Long-term pain relief rates are approximately 70% to 80% at 10 years, making MVD the most durable surgical treatment for appropriately selected patients.
The procedure is performed through a small incision behind the ear using a retrosigmoid craniotomy to access the trigeminal nerve at its root entry zone.
MVD preserves facial sensation, unlike ablative procedures that intentionally injure the nerve to interrupt pain signals.
Atlantic Brain and Spine's fellowship-trained cranial neurosurgeons determine whether microvascular decompression or another treatment offers the safest and most effective long-term relief.

MVD FOR TRIGEMINAL NEURALGIA AT A GLANCE

Condition treated	Trigeminal neuralgia (tic douloureux) electric shock-like facial pain
Procedure type	Posterior fossa microsurgical decompression of the trigeminal nerve
Approach	Small craniotomy behind the ear (retrosigmoid approach)
Anesthesia	General anesthesia with cranial nerve monitoring
Surgery time	2 to 3 hours
Hospital stay	2 to 4 nights
Long-term pain relief	Approximately 70 to 80% pain-free at 10 years

Timing and stay vary by patient and complexity. Your surgeon will confirm what to expect in your case.

What is trigeminal neuralgia?

Trigeminal neuralgia is a chronic pain disorder affecting the trigeminal nerve, the primary sensory nerve of the face. It causes sudden, severe, electric shock-like facial pain that typically affects one side of the face and lasts from a fraction of a second to two minutes. Attacks may be triggered by everyday activities such as chewing, speaking, brushing the teeth, washing the face, or even a light breeze.

In most patients, the pain is caused by a blood vessel most commonly the superior cerebellar artery compressing the trigeminal nerve where it enters the brainstem. Over time, this constant pulsatile compression damages the nerve’s protective myelin sheath, resulting in abnormal electrical signals that are perceived as intense facial pain.

Medications such as carbamazepine or oxcarbazepine are typically the first line of treatment. When medications become ineffective or produce unacceptable side effects, surgical treatment may provide more durable pain relief.

How MVD is performed

The patient is positioned on their side with the head secured in a Mayfield frame. A 3 to 4 cm incision is made behind the ear, and a small craniotomy approximately 2 cm in diameter is created. The surgeon enters the posterior fossa using microsurgical technique, identifies the trigeminal nerve at its root entry zone, and carefully mobilizes the compressing blood vessel away from the nerve. A small Teflon felt pad is then positioned between the nerve and the vessel to maintain permanent separation.

Intraoperative monitoring including brainstem auditory evoked potentials (BAEPs) to protect hearing and facial nerve monitoring is used throughout the procedure.

MVD versus other surgical options

Other surgical treatments for trigeminal neuralgia include stereotactic radiosurgery (Gamma Knife or CyberKnife) and percutaneous procedures such as balloon compression, glycerol rhizotomy, or radiofrequency thermocoagulation. These treatments relieve pain by intentionally injuring the trigeminal nerve, which can result in facial numbness and generally carries a higher risk of pain recurrence over time.

Microvascular decompression is unique because it preserves the trigeminal nerve while relieving the underlying vascular compression. For appropriately selected patients, it provides the highest likelihood of durable, long-term pain relief while maintaining normal facial sensation.

Benefits and risks

Potential benefits

Treats the underlying cause of trigeminal neuralgia without intentionally damaging the trigeminal nerve
Provides the highest long-term pain relief rates of any surgical treatment for trigeminal neuralgia
Preserves normal facial sensation, unlike ablative procedures
Most patients experience durable pain relief after a single operation without requiring additional procedures

Possible risks

Hearing changes related to the nearby hearing nerve, with risk minimized through intraoperative monitoring
Temporary or permanent facial weakness from proximity to the facial nerve (uncommon)
Cerebrospinal fluid (CSF) leak, usually recognized and managed during the initial hospitalization
Pain may recur over time, with approximately 20% to 30% of patients experiencing recurrence within 10 years

Your surgeon will review the benefits and risks specific to your diagnosis during your consultation.

What recovery looks like

Recovery from MVD is faster than many patients expect given that it is a posterior fossa craniotomy:

Days 1 to 3 Hospital stay of 2 to 4 nights. Most patients notice immediate or near-immediate pain relief. Headache and neck stiffness resolve over days.
Week 1 to 2 Return home with light activity restrictions. Most patients are off all or most pain medication by this point.
Weeks 2 to 4 Return to desk work and light daily activity. Driving permitted after 2 to 4 weeks with surgeon clearance.
6 weeks Full activity clearance for most patients. Long-term follow-up to monitor for recurrence.

Frequently asked questions

How is MVD different from Gamma Knife for trigeminal neuralgia?

Gamma Knife and CyberKnife treat trigeminal neuralgia by delivering focused radiation to the trigeminal nerve, gradually reducing pain by partially injuring the nerve. Pain relief typically develops over several weeks to months and is commonly associated with some degree of facial numbness.

Microvascular decompression works differently. It relieves the pressure of the compressing blood vessel without injuring the nerve, often providing immediate or near-immediate pain relief while preserving normal facial sensation. For appropriately selected patients, MVD offers the highest rates of durable long-term pain relief.

How quickly does pain relief occur after MVD?

Many patients wake from anesthesia with no facial pain a dramatic and immediate improvement. Some patients experience a delayed response over days to weeks. Patients who do not achieve complete relief immediately should allow several weeks before concluding the result, as the nerve sometimes takes time to normalize after decompression.

What if trigeminal neuralgia recurs after MVD?

Recurrence after MVD can be managed with repeat MVD in selected patients, or with radiosurgery or percutaneous techniques. Recurrence within the first year is more commonly due to inadequate decompression; later recurrence after 5 or more years is more often due to the Teflon pad shifting or new vessel contact.

Is MVD covered by insurance?

Yes. MVD for trigeminal neuralgia is covered under major insurance plans including Medicare and Medicaid when performed for appropriately diagnosed patients. Prior authorization is usually required. The ABS team can assist with the approval process.

This page is for general education and does not replace medical advice. Treatment decisions should be made with a qualified neurosurgeon based on your individual diagnosis and imaging. To discuss your options, call Atlantic Brain and Spine Brain Tumor Care at 973.993.7322 or request a consultation.

Facial Pain & Spasm Specialists at Atlantic Brain and Spine

Your care is provided by Atlantic Brain and Spine's multidisciplinary Facial Pain & Spasm Program, including fellowship-trained cranial neurosurgeons with expertise in microvascular decompression and other advanced treatments for trigeminal neuralgia.