title: Otosclerosis among patients with dizziness.
abstract: OBJECTIVE
  The objective of this study was to identify patients with otosclerosis and to characterize its clinical presentation among patients examined at our hospital with vertigo as the primary and most distressing symptom.
  
  
  METHODS
  Retrospective chart review.
  
  
  METHODS
  Tertiary medical center.
  
  
  METHODS
  This study involved 40 patients suffering from dizziness and diagnosed with otosclerosis.
  
  
  METHODS
  At inclusion, the clinical status, as well as auditory (pure tone hearing level and speech audiometry, impedancemetry) and vestibular function (bedside, nystagmography, caloric test and rotator chair testing) were assessed. The results were analyzed using parametric and non-parametric tests, and the chi2 test.
  
  
  RESULTS
  The clinical presentation was diverse: 12 patients with Menière's syndrome (30%); 11 patients with spontaneous recurrent vertigo without hearing fluctuation (27.5%); 13 patients with positional vertigo (32.5%); 3 patients with chronic unrelapsing imbalance (7.5%); and 1 patient with acute unilateral vestibulopathy (2.5%). There was a lag between the detection of hearing loss and the beginning of vertigo attacks or imbalance in all patients. When measured through bone conduction, hearing loss was significantly different in patients with Menière's disease, spontaneous recurrent vertigo and positional vertigo.
  
  
  CONCLUSIONS
  Dizziness, although frequent in patients with otosclerosis is rarely a cause for specific clinical assessment. There is a lag between the patient's perception of hearing loss and the initiation of vestibular symptoms, and it is not associated with any specific clinical disorder Otosclerosis can be found as any one of the most common vestibular disorders and in general, vestibular function tests reveal a more severe vestibular dysfunction than in the idiopathic forms.
  
  
  METHODS
  2A.
authors.affiliation: Hospital Universitario Marqués de Valdecilla, University of Cantabria, Department of Otorhinolaryngology.
authors.forename: P
authors.initials: P
authors.lastname: Eza-Nuñez
authors.forename: M
authors.initials: M
authors.lastname: Manrique-Rodriguez
authors.forename: N
authors.initials: N
authors.lastname: Perez-Fernandez
mesh_terms: D000328:Adult; D000367:Age Factors; D000369:Aged, 80 and over; D001301:Audiometry, Pure-Tone; D002150:Caloric Tests; D003627:Data Interpretation, Statistical; D004244:Dizziness / Q000209:etiology*; D017097:Electric Impedance; D005133:Eye Movements; D005260:Female; D006801:Humans; D008297:Male; D008575:Meniere Disease / Q000150:complications*; D008875:Middle Aged; D010040:Otosclerosis / Q000150:complications* / Q000175:diagnosis; D012737:Sex Factors; D014717:Vertigo / Q000209:etiology*