继发性良性阵发性位置性眩晕的临床特征及研究进展

Clinical features and advanced progress of secondary BPPV

良性阵发性位置性眩晕（BPPV）分为原发性和继发性两大类。在多数情况下，导致眩晕的原因不能明确，这类称之为原发性；而在30％～50％的患者中，BPPv可以找到特定的原因，这类称之为继发性。本文将继发性BPPV的发病原因、机制、临床特点及最新进展予以综述。

BPPV is a disease provoked by abrupt head movements,results in short paroxysmal vertigo or nystagmus.These patients often can accurately describe the dizziness happened when they head move suddenly,especially when looking upward,turning over in bed,lying down,or bending over.BPPV is divided into idiopathic BPPV and secondary BPPV,in most cases.The underlying cause cannot be determined,which is called idiopathic;however,in 30% patients,BPPV may be attributed to a specific cause and is termed secondary BPPV.We reviewed the pathogenesis,mechanisms,clinical features,treatment and the latest progress of secondary BPPV.