良性阵发性位置性眩晕 (ＢＰＰＶ)约占眩晕门诊的 1 7%,发病率仅次于梅尼埃病。Ｄｉｘ和Ｈａｌｌｐｉｋｅ(1 95 2 )首次描述本病 ,表现为患耳向下时诱发向地的旋转性眼震 ,潜伏期 1～ 5ｓ,持续 5～ 3 0ｓ,恢复直立位时出现反向眼震 ,反复置于诱发位置反应减弱。本病病因不明 , Benign paroxysmal positional vertigo (BPPV) accounts for about 17% of dizziness clinics, the incidence rate is second only to Meniere’s disease. For the first time, Dix and Hallpike (1952) describe this disease as a rotational nystagmus induced in the ear when the ear is down, with an incubation period of 1 to 5 seconds for 5 to 30 seconds and reverse nystagmus Decreased response to induction. The cause of the disease is unknown,