title: [To analyze the etiology of benign paroxysmal positional vertigo].
abstract: OBJECTIVE
  To analyze the occurrence and probable etiological factors of benign paroxysmal positional vertigo (BPPV).
  
  
  METHODS
  one hundred and twenty four BPPV cases were inquired histories, classified into different groups and analyzed relevant diseases. All patients were taken Caloric tests before Canal repositioning procedure, and compared the differences of unilateral weakness (UW) and semicircular canal involved between BPPV patients with and without relevant diseases.
  
  
  RESULTS
  There were 97 (78.2%) patients with relevant diseases while 27 (21.8%) without. Ninety-two (74.2%) patients with abnormal UW. To compare the normal and abnormal UW, posterior canal and lateral canal with abnormal UW values, unilateral or bilateral of abnormal UW values, consistency of abnormal UW side and BPPV side between BPPV patients with and without relevant diseases, there were no significant differences (Chi-square values were 0.000, 0.000, 0.306, 0.027, P>0.05).
  
  
  CONCLUSIONS
  BPPV patients with relevant diseases are common, which mainly occurs in middle-aged or aged people and female. Otolith ecclesiis and dysfunction of semicircular canal may have the same etiological factors. Caloric tests may do help to analyze the BPPV etiological factors.
authors.affiliation: The First Center Clinic College, Tianjin Medical University, Tianjin, 300192, China.
authors.forename: Na
authors.initials: N
authors.lastname: Zhang
authors.forename: Taisheng
authors.initials: T
authors.lastname: Chen
authors.forename: Hong
authors.initials: H
authors.lastname: Dong
authors.forename: Peng
authors.initials: P
authors.lastname: Lin
authors.forename: Ranran
authors.initials: R
authors.lastname: Liu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D065635:Benign Paroxysmal Positional Vertigo; D002150:Caloric Tests; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014717:Vertigo / Q000175:diagnosis / Q000209:etiology* / Q000473:pathology; D055815:Young Adult