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Symptoms

By Mayo Clinic staff

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Image showing Horner syndrome symptoms Horner syndrome symptoms

Signs and symptoms of Horner syndrome usually occur on one side of your face and typically include:

  • Drooping of your upper eyelid (ptosis) and slight elevation of the lower lid
  • Decreased pupil size in your affected eye (miosis)
  • Decreased or absent sweating on the affected side of your face (anhidrosis)

Rarely, a baby may be born with Horner syndrome. In these cases, the iris in the affected eye may be lighter in color than the other eye.

When to see a doctor
If you notice any signs or symptoms associated with Horner syndrome, see your doctor.

Causes Definition

  • See Also

    • Hand Scheduled
    Section Focus
  • Anhidrosis

    • Related Links
    Related Guides
    Children
    Parent
References
  1. Kedar S, et al. Horner's syndrome. http://www.uptodate.com/home/index.html. Accessed Jan. 20, 2011.
  2. Horner's syndrome. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merckmanuals.com/professional/sec16/ch208/ch208c.html. Accessed Jan. 20, 2011.
  3. Levsky ME, et al. Ophthalmologic conditions. In: Knoop KJ, et al. Atlas of Emergency Medicine. 3rd ed. New York, N.Y.: The McGraw-Hill Companies; 2010. http://www.accessmedicine.com/content.aspx?aID=6000511&searchStr=horner's+syndrome. Accessed Jan. 20, 2011.
  4. Ropper AH, et al. Disorders of ocular movement and pupillary function. In: Ropper AH, et al. Adams and Victor's Principles of Neurology. 9th ed. New York, N.Y.: The McGraw-Hill Companies; 2009. http://www.accessmedicine.com/content.aspx?aID=3631985&searchStr=horner's+syndrome#3631985. Accessed Jan. 20, 2011.
  5. Braverman RS. Eye. In: Hay WW, et al. Current Diagnosis & Treatment: Pediatrics. 20th ed. New York, N.Y.: The McGraw-Hill Companies; 2011. http://www.accessmedicine.com/content.aspx?aID=6580881&searchStr=horner's+syndrome. Accessed Jan. 20, 2011.
  6. Robertson DM (expert opinion). Mayo Clinic, Rochester, Minn. Jan. 27, 2011.
  7. Swanson JW (expert opinion). Mayo Clinic, Rochester, Minn. Jan. 26, 2011.
DS01137 April 16, 2011

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