title: [Analysis of clinical features of concomitant vertigo in idiopathic sudden deafness].
abstract: OBJECTIVE
  To analyze the clinical characteristics of concomitant vertigo in patients with sudden deafness (SD).
  
  
  METHODS
  Ninety-six cases of SD were reviewed retrospectively from January 2005 to July 2009. SD and benign paroxysmal positional vertigo (BPPV) were diagnosed according to the guides of China Medical Association. The characteristics of vestibular function and the order of the onset of cochlear and vestibular symptoms were analyzed.
  
  
  RESULTS
  Of all 96 cases, 23 (24.0%) cases presented with BPPV; 58 (60.4%) cases took the form of unilateral vestibular hypofunction and 15 (15.6%) cases had normal vestibular function. Time interval between cochlear and vestibular symptoms was as follows: 46 patients could tell the exact time of onset of cochlear and vestibular symptoms, of which 6 (13.0%) cases occurred simultaneously; 4 (8.7%) cases presented vertigo within 1 hour after onset of cochlear symptom hypofunction; 21 (45.7%) cases showed time interval between 1 hour and 24 hours; and 13 (28.3%) cases presented vertigo at several days (less than 10 days) after cochlear symptoms. And only in 2 (4.3%) cases did vertigo occur before cochlear symptoms.
  
  
  CONCLUSIONS
  Concomitant vertigo in idiopathic SD took the forms of normal or abnormal vestibular function, some of which were BPPV. Occurrence of vertigo was after cochlear symptoms.
authors.affiliation: Otorhinolaryngology Head and Neck Surgery Hospital, General Hospital of Chinese People's Liberation Army, Beijing 100853, China. zimingwu@163.com
authors.forename: Zi-ming
authors.initials: ZM
authors.lastname: Wu
authors.forename: Su-zhen
authors.initials: SZ
authors.lastname: Zhang
authors.forename: Xing-jian
authors.initials: XJ
authors.lastname: Liu
authors.forename: Lan
authors.initials: L
authors.lastname: Lan
authors.forename: Wei-yan
authors.initials: WY
authors.lastname: Yang
authors.forename: Dong-yi
authors.initials: DY
authors.lastname: Han
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D003639:Hearing Loss, Sudden / Q000150:complications* / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012189:Retrospective Studies; D014717:Vertigo / Q000150:complications* / Q000175:diagnosis*; D055815:Young Adult