中枢病変の明らかでない頭位変換性下眼瞼向き眼振10例の検討

• 岡田 昌浩

  愛媛大学耳鼻咽喉科・頭頚部外科

• 佐藤 恵里子

  愛媛大学耳鼻咽喉科・頭頚部外科

• 西原 江里子

  愛媛大学耳鼻咽喉科・頭頚部外科 愛媛県立中央病院耳鼻咽喉・頭頚部外科

• 高木 太郎

  愛媛大学耳鼻咽喉科・頭頚部外科 愛媛県立中央病院耳鼻咽喉・頭頚部外科

• 暁 清文

  愛媛大学耳鼻咽喉科・頭頚部外科 鷹ノ子病院耳鼻咽喉科

書誌事項

タイトル別名

• Ten cases of positional down beat nystagmus without central nervous system findings

抄録

We report herein on the clinical features in ten patients with positional down-beat nystagmus (p-DBN) without any sign and symptom of central nervous system (CNS) disorder. Brain MRI was normal in all subjects, except in one patient who refused the examination. Gaze nystagmus was not present in any patient. Down-beat nystagmus was observed only in the supine or head-hanging position: it was never observed upon returning to a sitting position. The patients' p-DBN had no torsional component, but had some latency. All patients felt dizziness when p-DBN was observed. In 8 patients (80%), benign paroxysmal positional vertigo (BPPV) preceded the incidence of p-DBN. Three patients (30%) were diagnosed as having posterior semicircular canal BPPV before the occurrence of p-DBN. Dizziness disappeared in 8 patients (80%) within 6 months, while p-DBN remained in 4 patients (40%). Although p-DBN without any CNS disorder was suspected to be a symptom of BPPV associated with the anterior semicircular canal, we question the strength of this hypothesis mainly because no upward-beat nystagmus is seen by reversing the position.

収録刊行物

• Ｅｑｕｉｌｉｂｒｉｕｍ　Ｒｅｓｅａｒｃｈ

  Ｅｑｕｉｌｉｂｒｉｕｍ　Ｒｅｓｅａｒｃｈ 73 (6), 533-537, 2014

  一般社団法人 日本めまい平衡医学会

キーワード

• down-beating nystagmus
• positioning vertigo
• ASC BPPV

詳細情報

• CRID: 1390282679927268992
• NII論文ID: 130004910887
• DOI: 10.3757/jser.73.533
• ISSN: 1882577X
• ISSN: 03855716
• Web Site: https://search.jamas.or.jp/link/ui/2015109329
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可