Stephen J. Schueler, M.D.

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Horner's Syndrome Overview

What is Horner's syndrome?
A person with Horner's syndrome has irritation of the nerves that supply the eye and face. The nerves do not function correctly, which results in a drooping eyelid, small pupil and the lack of perspiration on one side of the face. Horner's syndrome can be caused by a tumor in the neck or upper chest that is irritating the nearby nerves.

What are the symptoms of Horner's syndrome?
Symptoms of Horner's syndrome include eyelid weakness, drooping eyelid, constricted pupil, and absence of sweating: all on the same side of the face. Additional symptoms of Horner's syndrome depend on the underlying cause.

How does the doctor treat Horner's syndrome?
The treatment for Horner's syndrome depends on the underlying cause.

Continue to Horner's Syndrome Symptoms

Last Updated: Feb 9, 2010 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Horner's Syndrome References
  1. Amonoo-Kuofi HS. Horner's syndrome revisited: with an update of the central pathway. Clin Anat. 1999;12(5):345-61. [10462732]
  2. Fetzer SJ. Recognizing Horner's syndrome. J Perianesth Nurs. 2000 Apr;15(2):124-8. [11111529]
  3. Leira EC, Bendixen BH, Kardon RH, Adams HP Jr. Brief, transient Horner's syndrome can be the hallmark of a carotid artery dissection. Neurology. 1998 Jan;50(1):289-90. [9443497]
  4. Patel S, Ilsen PF. Acquired Horner's syndrome: clinical review. Optometry. 2003 Apr;74(4):245-56. [12703690]
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