What Is Trigeminal Neuralgia?

Trigeminal neuralgia is a neurological pain disorder involving the trigeminal nerve, which carries sensation from much of the face — the forehead, cheek, jaw, teeth and gums — to the brain. The classic symptom is sudden, severe, electric shock-like facial pain or stabbing pain on one side of the face. Each attack may last only seconds to a couple of minutes, but attacks can occur again and again, sometimes many times a day.

A hallmark of the condition is that the severity of the pain can seem dramatically out of proportion to the trigger. Some people begin avoiding eating, talking or brushing their teeth because they fear the next attack.

A common mechanism is a blood vessel contacting or compressing the trigeminal nerve near where it enters the brainstem. Other causes can include multiple sclerosis or structural abnormalities affecting the nerve. In some patients, no definite cause is identified — so not every case is due to vascular compression.

Diagnosis begins primarily with the patient's description of the pain and a neurological examination. The location, duration, triggers and electric shock-like quality of the pain provide important clues. An MRI may be ordered to evaluate the trigeminal nerve and look for potential causes such as vascular compression, multiple sclerosis or another structural abnormality.

No. Trigeminal neuralgia is different from migraine, tension headache and most dental pain. Because facial pain can also come from dental disease, sinus problems, temporomandibular (jaw joint) disorders, migraine and other neurological conditions, an accurate diagnosis matters — it guides which treatment is likely to help.

Medications that stabilize abnormal nerve firing are commonly used. Carbamazepine or oxcarbazepine are commonly used first-line options, and other medications may be considered depending on the individual patient and their response to treatment.

For patients whose symptoms remain severe despite medication, procedures or neurosurgical treatments may be considered, such as microvascular decompression or other procedures directed at the nerve. Surgery is not appropriate for every patient; the choice depends on the cause, overall health and individual goals.

Recurrent severe facial pain deserves medical evaluation — particularly electric shock-like attacks or pain triggered by touching the face, chewing or brushing the teeth.

New facial pain accompanied by weakness, persistent numbness, vision changes, difficulty speaking or other acute neurological symptoms requires prompt evaluation. Sudden symptoms like these can signal a stroke — call 911.