良性发作性位置性眩晕(BBPV)由Barany(1921)首次描述。患者在患耳向下俯卧或仰卧位时发作眩晕,恢复直立位时多数患者再次发作。眩晕常持续5～30秒,可伴恶心、呕吐和大汗淋漓。发病前或有头部外伤史。耳神经学检查多正常,只在患耳向下仰卧位位置试验时出现旋转性眼震。眼震最晚延迟10秒出现,反复诱发则有疲劳现象。这些症状和体征一般历数周自然缓解,且全都能在1年内完全消失。少数患者长时间不能自然缓解且保守治疗(理疗、药物治疗)无效,可行后壶腹神经切断术。作者治疗顽固的BBPV患者18例,年龄39～71岁,男7女11。10人为右耳发病。患病时间14～41个月。经详询病史及耳神经学检查确诊。其中5例疑及桥 Benign paroxysmal positional vertigo (BBPV) was first described by Barany (1921). The patient developed dizziness when the patient was prone to the prone or supine position, and most of the patients returned to normal position. Dizziness often lasts 5 to 30 seconds, may be accompanied by nausea, vomiting and sweating. Pre-onset or history of head trauma. Auricular neurological examination more than normal, only in the ear position down supine test occurs when rotating nystagmus. Nystagmus late onset of 10 seconds appear repeatedly induced fatigue. These symptoms and signs generally ease naturally for weeks, and all disappear completely within a year. A small number of patients for a long time can not be naturally relieved and conservative treatment (physical therapy, drug treatment) is invalid, feasible after amputation of the ampulla. The author treats 18 patients with stubborn BBPV, aged 39 to 71 years old, male and 7 female 11.10 people for the right ear. Ill time 14 to 41 months. Detailed medical history and otological examination confirmed. Five of them suspect the bridge