Treating Horner's Syndrome in Dogs and Cats

Modified on Jun 29, 2022

A dog or cat with Horner’s Syndrome will appear as though they have had a stroke.  The big difference between Horner’s Syndrome and a stroke is that recovery from Horner’s Syndrome will normally occur within weeks.

What is Horner’s Syndrome?

Horner’s Syndrome is a dysfunction of the sympathetic nervous system, affecting the eye and facial muscles.  The eyelid on the affected side will be droopy and there may be both excessive salivation and difficulty in eating.  The pupil of the affected eye will be smaller than normal and the third eyelid will be red and raised.  The entire eye may look sunken.   Any age or breed can develop Horner’s Syndrome, although Cocker Spaniels or Golden Retrievers are slightly more likely to develop the problem.

What Causes Horner’s Syndrome?

There are a number of possible reasons for Horner’s Syndrome, including:

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    List of Remedies for Horner's Syndrome