J Korean Neurol Assoc.
2004 Dec;22(6):646-648.
Perverted Head Shaking Nystagmus in a Patient with Cerebellar Infarction
- Affiliations
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- 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.
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