Horner syndrome

Horner syndrome classically presents as an ipsilateral blepharoptosis, pupillary miosis and facial anhydrosis due disruption at some point of the oculosympathetic pathway. The ptosis is due to interruption of the sympathetic control of the levator palpebrae superioris muslce, which controls elevation and retraction of the upper eyelid.

Can be anatomically classified into the following types 1:

  • central
  • pre-ganglionic
  • post-ganglionic



There is an exhaustive list of causes. The main ones include:

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Article information

rID: 7463
Synonyms or Alternate Spellings:
  • Horner's syndrome

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Cases and figures

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