Department of Otolaryngology, Toho University Sakura Medical Center, Sakura City, Chiba 285-0841, Japan.
Department of Otolaryngology, Toho University Sakura Medical Center, Sakura City, Chiba 285-0841, Japan; Department of Clinical Functional Physiology, Toho University Sakura Medical Center, Chiba 285-0841, Japan.
Auris Nasus Larynx. 2020 Dec;47(6):1070-1073. doi: 10.1016/j.anl.2019.12.005. Epub 2020 Apr 5.
Major earthquakes occasionally cause vertiginous attacks or persistent dizziness, which may be related to the effects of autonomic stress on equilibrium function and/or psychological factors. We present the case of a 73-year-old woman who suffered from persistent dizziness for 1 year, during which she lived in a house tilted by the great 2011 Tōhoku earthquake. An electronystagmogram demonstrated leftward horizontal and downbeat nystagmus in the sitting and supine positions with eyes closed. Caloric testing and cervical vestibular-evoked myogenic potentials showed normal responses in both ears. Posturography indicated no involvement of psychological factors or autonomic stress. After moving into a new apartment, both the dizziness and nystagmus completely disappeared within 10 weeks. We speculate that the gravity-related linear acceleration with vertical and horizontal components in the tilted house may have chronically stimulated the otoliths, inducing the symptoms and nystagmus via the velocity storage mechanism.
偶尔发生的大地震可能会导致眩晕发作或持续性头晕，这可能与自主应激对平衡功能和/或心理因素的影响有关。我们报告了一例 73 岁女性的病例，她在遭受持续头晕 1 年，期间她住在被 2011 年东北大地震倾斜的房屋中。眼震电图显示在坐位和仰卧位闭眼时出现向左的水平和下跳性眼震。冷热试验和颈性前庭诱发肌源性电位在双耳均显示正常反应。姿势描记术表明无心理因素或自主应激的参与。在搬入新公寓后，10 周内头晕和眼震完全消失。我们推测，倾斜房屋中与重力相关的具有垂直和水平分量的线性加速度可能会慢性刺激耳石，通过速度储存机制引起症状和眼震。
