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Title: Horner's Syndrome

Category: Neurology

Keywords: Horner's, Horner's Syndrome, Infarction (PubMed Search)

Posted: 10/3/2007 by Aisha Liferidge, MD (Updated: 3/3/2026)

Horner's Syndrome Deficit in descending sympathetic pathways Miosis + Ptosis + Anhidrosis Associated with lateral medullary infarctions, which are caused by disrupted flow to the posterior inferior cerebral artery (PCA) (i.e. Wallenberg Syndrome)