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Horner’s syndrome secondary to internal carotid artery occlusion
  1. Saadat Ali Saleemi and
  2. Ramesh Sahathevan
  1. Internal Medicine Services, Ballarat Health Services, Ballarat, Victoria, Australia
  1. Correspondence to Dr Ramesh Sahathevan; Ramesh.Sahathevan{at}


Horner’s syndrome results from interruption of the sympathetic innervation to the eye. This interruption may occur at three anatomical levels along the sympathetic trunk pathway. There are numerous causes of Horner’s syndrome, including injury to the carotid artery, of which arterial dissection is the commonest pathology. Occlusive carotid disease secondary to atherosclerosis is a relatively rare cause of Horner’s syndrome. We describe a patient with Horner’s syndrome due to complete occlusion of the ipsilateral internal carotid artery.

  • neuroopthalmology
  • pupil
  • radiology

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  • Contributors SAS drafted the manuscript. RS provided feedback and edited the manuscript. SAS and RS were involved in the clinical care of the patient.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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