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Trigeminal Neuralgia

Trigeminal neuralgia causes sudden, severe, electric shock-like facial pain triggered by everyday actions like chewing or touching the face; medications control most cases.

Neurologic
Trigeminal neuralgia is a chronic pain condition affecting the trigeminal nerve, which carries sensation from the face to the brain. It causes sudden, severe, electric shock-like jolts of facial pain that can be triggered by the lightest everyday actions — chewing, brushing teeth, or a breeze on the cheek. The condition is more common in women and in people over 50. Although the pain is among the most intense in medicine, effective treatments control it for most people. Causes: Trigeminal neuralgia results from irritation or damage to the trigeminal nerve's protective covering:
  • Blood vessel compression: The most common cause is a normal artery or vein pressing on the nerve where it exits the brainstem, gradually wearing away its insulating myelin sheath.
  • Multiple sclerosis: In younger patients especially, MS can damage the myelin of the trigeminal nerve and produce identical pain.
  • Other causes: Rarely, a tumor or other lesion pressing on the nerve is responsible, which is one reason imaging is part of the workup.
Symptoms: The pain of trigeminal neuralgia has a highly recognizable pattern:
  • Paroxysms of pain: Sudden, stabbing, electric shock-like attacks lasting from a few seconds up to about two minutes, almost always on one side of the face — usually the cheek, jaw, teeth, or gums.
  • Triggers: Chewing, talking, smiling, brushing teeth, shaving, applying makeup, light touch, or even wind on the face can set off an attack.
  • Clusters and remissions: Attacks may come in volleys over days to weeks, then quiet down for months before returning — often more frequently over time.
  • Where the pain travels: The trigeminal nerve has three branches. Attacks most often follow the branch serving the cheek and upper teeth or the one serving the jaw and lower teeth; the branch over the forehead and eye is involved far less often.
  • Constant forms: Some people also have a duller, burning background ache between sharp attacks.
Because severe facial pain has several look-alikes — dental problems, TMJ disorders, migraine, and the lingering nerve pain that follows shingles, known as post-herpetic neuralgia — an accurate diagnosis is essential before treatment. Diagnosis: Diagnosis is based on a detailed description of the pain: its location, its shock-like quality, its brief duration, and its triggers. The neurologic examination is typically normal in classic cases. An MRI of the brain is usually ordered to look for a compressing blood vessel, signs of multiple sclerosis, or other structural causes. Many patients see a dentist first for suspected tooth pain, so an unrevealing dental evaluation is itself a useful clue. Features that are not typical of the classic form — pain on both sides of the face, true numbness, hearing loss, weakness of the chewing muscles, or onset before about age 40 — raise the possibility of multiple sclerosis or a structural lesion and make imaging especially important. Treatment: Unlike most pain conditions, trigeminal neuralgia responds poorly to ordinary painkillers but very well to certain anti-seizure medications:
  • First-line medications: Carbamazepine or the related drug oxcarbazepine control pain in the majority of patients and also help confirm the diagnosis when they work.
  • Additional options: Gabapentin, lamotrigine, or baclofen may be used alone or in combination when first-line drugs are not tolerated or lose effect.
  • Procedures: For pain that resists medication, options include microvascular decompression surgery to cushion the nerve, stereotactic radiosurgery, and targeted injections or ablation of the nerve.
  • Supportive care: Attacks that prevent eating or drinking need prompt medical attention to avoid dehydration.
  • Ongoing monitoring: The medications used for trigeminal neuralgia require periodic office follow-up and blood work, and doses are adjusted over time as pain patterns change.
Complications: The condition itself is not dangerous, but poorly controlled pain takes a real toll:
  • Avoiding food and hygiene: Fear of setting off an attack leads some people to skip meals, drink less, or stop brushing their teeth, risking weight loss, dehydration, and dental disease.
  • Sleep and mood: Unpredictable attacks are exhausting, and low mood and anxiety are common when pain is not yet controlled.
  • Social withdrawal: Because talking and smiling can trigger pain, many people limit conversation and time with others until treatment takes hold.
No one should live with uncontrolled facial pain. The internal-medicine team at Zimmer Medical Group can evaluate your symptoms, start proven treatment, and coordinate specialty care when needed — schedule a visit today.

Related Medications

Commonly prescribed medications for this condition

GabapentinLamotrigine

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