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What causes Horner's syndrome?

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Horner's syndrome usually is caused by some kind of damage to a string of nerves that help control your eyes, heart rate, sweat, and blood pressure.  Things can affect the flow of signals through them including:

  • Cancer
  • Cysts or tumors
  • Damage to your aorta, the main blood vessel to your heart
  • Damage to your myelin, a thin sheath of tissue around your nerves
  • Infection at the base of your skull
  • Injuries to the carotid artery or jugular vein, which carry blood through your neck
  • Migraine and cluster headaches
  • Stroke
  • Surgery

From: What Is Horner Syndrome? WebMD Medical Reference

SOURCES:

Mayo Clinic: "Horner syndrome."

National Organization for Rare Disorders: "Horner syndrome."

Genetics Home Reference: "Horner syndrome."

American Academy of Ophthalmology: "Horner syndrome."

Reviewed by Whitney Seltman on August 6, 2019

SOURCES:

Mayo Clinic: "Horner syndrome."

National Organization for Rare Disorders: "Horner syndrome."

Genetics Home Reference: "Horner syndrome."

American Academy of Ophthalmology: "Horner syndrome."

Reviewed by Whitney Seltman on August 6, 2019

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Can newborns get Horner's syndrome?

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