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What causes trigeminal neuralgia?

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It starts with irritation of the trigeminal nerve. You might have a blood vessel pressing on the nerve, damaging the protective coating around it, which is called the myelin sheath.

Certain diseases, like multiple sclerosis, also can injure the myelin sheath. Sometimes a tumor or a tangle of arteries presses on the nerve.

Your trigeminal nerve can also be injured -- perhaps by surgery, an accident, or a stroke.

From: What Is Trigeminal Neuralgia? WebMD Medical Reference

SOURCES: Mayo Clinic: “Diseases and Conditions -- Trigeminal Neuralgia.”

American Association of Neurological Surgeons: “Conditions and Treatments -- Trigeminal Neuralgia.”

TNA Facial Pain Association: “What Is Trigeminal Neuralgia?”

New York Presbyterian Hospital: “Health Library -- Trigeminal Neuralgia.”

National Institute of Neurological Disorders and Stroke: “Trigeminal Neuralgia Fact Sheet.”

Reviewed by Melinda Ratini on March 23, 2018

SOURCES: Mayo Clinic: “Diseases and Conditions -- Trigeminal Neuralgia.”

American Association of Neurological Surgeons: “Conditions and Treatments -- Trigeminal Neuralgia.”

TNA Facial Pain Association: “What Is Trigeminal Neuralgia?”

New York Presbyterian Hospital: “Health Library -- Trigeminal Neuralgia.”

National Institute of Neurological Disorders and Stroke: “Trigeminal Neuralgia Fact Sheet.”

Reviewed by Melinda Ratini on March 23, 2018

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