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Symptoms
By Mayo Clinic staffSigns 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
- 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.
- Kedar S, et al. Horner's syndrome. http://www.uptodate.com/home/index.html. Accessed Feb. 4, 2009.
- Riordan-Eva P, et al. Neuro-ophthalmology. In: Riordan-Eva P, et al. Vaughan & Asbury's General Ophthalmology. 17th ed. New York, N.Y.: McGraw-Hill; 2004. http://www.accessmedicine.com/content.aspx?aID=3091826&searchStr=horner's+syndrome. Accessed Feb. 4, 2009.
- Ropper AH, et al. Disorders of ocular movement and pupillary function. In: Ropper AH, et al. Adams and Victor's Principles of Neurology. 8th ed. New York, N.Y.: McGraw-Hill; 2005. http://www.accessmedicine.com/content.aspx?aID=969125&searchStr=horner's+syndrome. Accessed Feb. 4, 2009.
- Birinyi F, et al. Ophthalmologic conditions. In: Knoop KJ, et al. Atlas of Emergency Medicine. 2nd ed. New York, N.Y.: McGraw-Hill; 2002. http://www.accessmedicine.com/content.aspx?aID=787476&searchStr=horner's+syndrome. Accessed Feb. 4, 2009.
- Mahoney NR, et al. Pediatric Horner syndrome: Etiologies and roles of imaging and urine studies to detect neuroblastoma and other responsible mass lesions. American Journal of Ophthalmology. 2006;142:651.
- Braverman RS. Eye. In: Hey WW, et al. Current Diagnosis & Treatment: Pediatrics, 19th ed. New York, N.Y.: McGraw-Hill; 2009. http://www.accessmedicine.com/content.aspx?aID=3401185&searchStr=horner's+syndrome. Accessed Feb. 4, 2009.
