Horner's Syndrome

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                      General Information



Horner's syndrome is a group of signs that indicate something is

wrong along a certain nerve pathway inside the body.



The autonomic nervous system controls involuntary responses that

aid the body in emergencies and maintain the normal internal

state of the body.  One subdivision of the autonomic nervous

system is the sympathetic nervous system.



Diseases, tumors, degeneration and injuries along any portion

of the sympathetic pathways may present certain recognizable

signs, sometimes referred to as syndromes.  One such collection

of signs is called Horner's syndrome, and includes drooping of

the upper eyelid, a small pupil, partial elevation of the third

eyelid, and slight retraction of the eyeball within the socket.



                 Important Points in Treatment



1.  The exact cause of Horner's syndrome is often very difficult

    to find, and sometimes the syndrome will simply disappear

    over an extended period.  Occasionally it will remain with

    no apparent harm to the patient.



2.  Since the syndrome may indicate serious disease, causes

    should be investigated.



       Notify the Doctor if Any of the Following Occur:



    * You note any changes in your pet.



    * You cannot give the prescribed medication.