Epley J M
Otolaryngol Head Neck Surg (1979). 1980 Sep-Oct;88(5):599-605. doi: 10.1177/019459988008800514.
Twenty-nine patients who demonstrated the classic nystagmus of benign paroxysmal positional vertigo in the provocative, ear-down position had a high incidence of concurrent symptoms. These included vertigo provoked by arising, bending over, head rotation, linear acceleration, and vertical oscillation. Some have not been reported previously in relation to this syndrome. Elimination of both concurrent and classic symptoms via singular neurectomy in nine patients indicates a common pathophysiologic mechanism, probably involving cuplolithiasis in the posterior semicircular canal. These concurrent symptoms should be considered part of the syndrome.
29例在激发性耳向下位表现出良性阵发性位置性眩晕典型眼球震颤的患者，并发症状发生率很高。这些症状包括起身、弯腰、头部旋转、直线加速和垂直振荡诱发的眩晕。其中一些症状此前尚未见与该综合征相关的报道。9例患者通过单神经切除术消除并发症状和典型症状，提示存在共同的病理生理机制，可能涉及后半规管的耳石症。这些并发症状应被视为该综合征的一部分。
