Persistent Down-Beating Torsional Positional Nystagmus: Posterior Semicircular Canal Light Cupula?
A 16-year-old boy with rotatory positional vertigo and nausea, particularly when lying down, visited our clinic. Initially, we observed vertical/torsional (downward/leftward) nystagmus in the supine position, and it did not diminish. In the sitting position, nystagmus was not provoked. Neurological...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Case Reports in Otolaryngology |
| Online Access: | http://dx.doi.org/10.1155/2016/1249325 |
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| _version_ | 1832552376991481856 |
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| author | Akihide Ichimura Koji Otsuka |
| author_facet | Akihide Ichimura Koji Otsuka |
| author_sort | Akihide Ichimura |
| collection | DOAJ |
| description | A 16-year-old boy with rotatory positional vertigo and nausea, particularly when lying down, visited our clinic. Initially, we observed vertical/torsional (downward/leftward) nystagmus in the supine position, and it did not diminish. In the sitting position, nystagmus was not provoked. Neurological examinations were normal. We speculated that persistent torsional down-beating nystagmus was caused by the light cupula of the posterior semicircular canal. This case provides novel insights into the light cupula pathophysiology. |
| format | Article |
| id | doaj-art-9d7d51cd39c342528e3fd4417145f857 |
| institution | Kabale University |
| issn | 2090-6765 2090-6773 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Case Reports in Otolaryngology |
| spelling | doaj-art-9d7d51cd39c342528e3fd4417145f8572025-02-03T05:58:54ZengWileyCase Reports in Otolaryngology2090-67652090-67732016-01-01201610.1155/2016/12493251249325Persistent Down-Beating Torsional Positional Nystagmus: Posterior Semicircular Canal Light Cupula?Akihide Ichimura0Koji Otsuka1Department of Otorhinolaryngology, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, JapanDepartment of Otorhinolaryngology, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, JapanA 16-year-old boy with rotatory positional vertigo and nausea, particularly when lying down, visited our clinic. Initially, we observed vertical/torsional (downward/leftward) nystagmus in the supine position, and it did not diminish. In the sitting position, nystagmus was not provoked. Neurological examinations were normal. We speculated that persistent torsional down-beating nystagmus was caused by the light cupula of the posterior semicircular canal. This case provides novel insights into the light cupula pathophysiology.http://dx.doi.org/10.1155/2016/1249325 |
| spellingShingle | Akihide Ichimura Koji Otsuka Persistent Down-Beating Torsional Positional Nystagmus: Posterior Semicircular Canal Light Cupula? Case Reports in Otolaryngology |
| title | Persistent Down-Beating Torsional Positional Nystagmus: Posterior Semicircular Canal Light Cupula? |
| title_full | Persistent Down-Beating Torsional Positional Nystagmus: Posterior Semicircular Canal Light Cupula? |
| title_fullStr | Persistent Down-Beating Torsional Positional Nystagmus: Posterior Semicircular Canal Light Cupula? |
| title_full_unstemmed | Persistent Down-Beating Torsional Positional Nystagmus: Posterior Semicircular Canal Light Cupula? |
| title_short | Persistent Down-Beating Torsional Positional Nystagmus: Posterior Semicircular Canal Light Cupula? |
| title_sort | persistent down beating torsional positional nystagmus posterior semicircular canal light cupula |
| url | http://dx.doi.org/10.1155/2016/1249325 |
| work_keys_str_mv | AT akihideichimura persistentdownbeatingtorsionalpositionalnystagmusposteriorsemicircularcanallightcupula AT kojiotsuka persistentdownbeatingtorsionalpositionalnystagmusposteriorsemicircularcanallightcupula |