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Horner Syndrome

Horner Syndrome

Synonym(s) - Bernard Syndrome - Miosis, Innervational Defect - Oculosympathetic Syndrome - Claude Bernard-Horner Syndrome - Horner Syndrome, Acquired

Definition: A syndrome associated with defective sympathetic innervation to one side of the face, including the eye. Clinical features include MIOSIS; mild BLEPHAROPTOSIS; and hemifacial ANHIDROSIS (decreased sweating)(see HYPOHIDROSIS). Lesions of the BRAIN STEM; cervical SPINAL CORD; first thoracic nerve root; apex of the LUNG; CAROTID ARTERY; CAVERNOUS SINUS; and apex of the ORBIT may cause this condition. (From Miller et al., Clinical Neuro-Ophthalmology, 4th ed, pp500-11)

Broader term(s)

  • Nervous System Diseases
  • Autonomic Nervous System Diseases
  • Horner Syndrome


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