ISSN 2398-2969      

Horner syndrome

icanis
Contributor(s):

Vetstream Ltd

Mark Lowrie


Horner syndrome

A syndrome is a term given to a group of signs that have significance when they all occur together. It is important to realise that having a syndrome is not the same as having a diagnosis. A syndrome, however, often has a limited number of causes such that recognising a specific syndrome allows us to look more clearly for a small number of possible disease causes (ie the diagnosis). 

Horner syndrome is a collection of signs resulting in a constricted, small pupil (miosis); drooping of the upper eyelid; a slightly sunken eyeball in the eye socket (enophthalmos) and protrusion of the third eyelid. The condition is caused by damage to sympathetic nervous system as it supplies the eye on the affected side of the head. 

What is the sympathetic nervous system?

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Why does my dog have Horner syndrome?

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What signs will my dog show?

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How will my vet diagnose it?

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What diseases affect the first order neuron?

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What diseases affect the second order neuron?

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What diseases affect the third order neuron?

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How do I treat Horner syndrome?

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