J Korean Neurol Assoc.  2004 Dec;22(6):646-648.

Perverted Head Shaking Nystagmus in a Patient with Cerebellar Infarction

Affiliations
  • 1Department of Neurology, Seoul National University College of Medicine, Seoul, Korea. jisookim@snu.ac.kr
  • 2Department of Otolaryngology, Seoul National University College of Medicine, Seoul, Korea.
  • 3Department of Head and Neck Surgery, Seoul National University College of Medicine, Seoul, Korea.
  • 4Department of Neurology, Pusan National University College of Medicine, Busan, Korea.

Abstract

Perverted head shaking nystagmus (pHSN) refers to a phenomenon that the head shaking nystagmus occurs in a different plane than the vestibular stimulus. pHSN signifies central vestibular dysfunction. The authors describe a patient who showed an isolated downbeat head shaking nystagmus from a focal cerebellar infarction in the territory of the medial posterior inferior cerebellar artery. Head shaking maneuver should be applied to all patients with isolated vertigo from a presumed vascular origin.

Keyword

Head shaking nystagmus; Vertigo; Cerebellum

MeSH Terms

Arteries
Cerebellum
Head*
Humans
Infarction*
Vertigo
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