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Frequently Asked Questions

Doctors’ Answers to “Frequently Asked Questions” – Horners Syndrome

These comments are made for the purpose of discussion and should NOT be used as recommendations for or against therapies or other treatments. An individual patient is always advised to consult their own physician.

Horners Syndrome

Question: How is Horners syndrome detected? What is the treatment for Horner’s syndrome? What is the cause?

Answer: Horners Syndrome is caused by damage or interruption of the sympathetic nerve to the eye. This causes a small, regular pupil; ptosis(drooping) of the eye lid on the same side; and occasionally loss of sweat formation on the forehead of the affected eye. The pupil will still react to light stimulus and will accommodate to distant vision. The pupil of Horners Syndrome will not enlarge in the dark.
Treatment for Horners Syndrome focuses on finding the cause of the interruption of the sympathetic nerve to that area of the eye. This is usually in the neck, but can be in the brain.