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Trigeminal Neuralgia

Trigeminal neuralgia (TN) is a chronic pain condition affecting the trigeminal nerve (cranial nerve V), which carries sensation from the face to the brain. It causes sudden, severe, brief, stabbing, recurrent episodes of facial pain, typically in the distribution of one or more branches of the trigeminal nerve.

Symptoms

  • Sudden, severe, electric shock-like facial pain
  • Episodes lasting seconds to minutes
  • Pain in V2 (maxillary) or V3 (mandibular) distribution
  • Triggered by light touch, chewing, talking, brushing teeth
  • Pain-free intervals between episodes
  • Progressive increase in frequency over time

Causes

  • Vascular compression of the trigeminal nerve root (most common)
  • Demyelination (multiple sclerosis-associated)
  • Brain tumors or cysts (rare)
  • Herpes zoster (post-herpetic neuralgia variant)
  • Idiopathic

Diagnosis

Accurate diagnosis is essential for effective treatment. Clinicians typically use a combination of:

  • Clinical history — classic description of TN pain
  • MRI with thin cuts and CISS/FIESTA sequences (neurovascular compression)
  • Brain MRI to rule out MS or tumor
  • Diagnostic response to carbamazepine
  • Neurological examination (usually normal between episodes)

Treatment Approaches

Pharmacotherapy: Carbamazepine (first-line), oxcarbazepine, baclofen
Interventional: Percutaneous procedures (rhizotomy, balloon compression, glycerol injection)
Surgical: Microvascular decompression (MVD) — curative potential
Radiosurgery (Gamma Knife) for inoperable cases

🚨 Red Flags

Seek urgent medical evaluation if you experience any of the following:

  • ⚠️ Atypical pain features (constant, burning)
  • ⚠️ Sensory deficit on examination
  • ⚠️ Progressive course without treatment-free intervals
  • ⚠️ Bilateral symptoms

Frequently Asked Questions

Related Conditions

Cervical Radiculopathy

Cervical radiculopathy is pain, numbness, or weakness caused by compression or irritation of a cervical nerve root. It most commonly results from disc herniation or foraminal stenosis and typically affects the C6 or C7 nerve roots.

Dr. Shahnawaz F Shah

Dr. Shahnawaz F Shah

Interventional Spine & Pain Physician

Dr. Shah specializes in the diagnosis and management of trigeminal neuralgia using evidence-based approaches tailored to each patient's needs.

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Medical Disclaimer: The information on this page is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional for personalized evaluation and management.