Document Detail

Aetiology, prevalence and diagnosis of deafness in dogs and cats.
MedLine Citation:
PMID:  8634862     Owner:  NLM     Status:  MEDLINE    
Peripheral deafness may be inherited or acquired, congenital or later-onset, and sensorineural or conductive. The most commonly observed forms are inherited congenital sensorineural, acquired later-onset sensorineural (ototoxicity, presbycusis) and acquired later-onset conductive (chronic otitis externa/media). In most dog and cat breeds inherited congenital sensorineural deafness results from perinatal degeneration of the stria vascularis, the vascular bed of the outer wall of the cochlear duct, which leads to hair cell degeneration. The strial degeneration appears to result from the absence of melanocytes, but their function in this structure is unknown. Ototoxicity may result from any of a large number of drugs and chemicals that directly or indirectly destroy cochlear hair cells. The effects are dose-dependent and in rare cases reversible. The most commonly recognized ototoxic drugs are the aminoglycoside antibiotics. Presbycusis, the ageing-related progressive hearing loss unattributable to other causes, is sensorineural but may also include mechanical changes in the tympanum and ossicles. Hearing aids may be accepted by some dogs as long as some residual function remains. Breeds reported to have been affected by congenital sensorineural deafness are listed and those with the highest prevalence are noted. Methods for diagnosis of deafness are described.
G M Strain
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.; Review    
Journal Detail:
Title:  The British veterinary journal     Volume:  152     ISSN:  0007-1935     ISO Abbreviation:  Br. Vet. J.     Publication Date:  1996 Jan 
Date Detail:
Created Date:  1996-07-10     Completed Date:  1996-07-10     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0372554     Medline TA:  Br Vet J     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  17-36     Citation Subset:  IM    
School of Veterinary Medicine, Louisiana State University, Baton Rouge 70803-8420, USA.
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MeSH Terms
Cat Diseases* / diagnosis,  epidemiology,  etiology
Deafness / diagnosis,  epidemiology,  etiology,  veterinary*
Dog Diseases* / diagnosis,  epidemiology,  etiology
Ear / physiology
Evoked Potentials, Auditory, Brain Stem
Presbycusis / veterinary
Grant Support
Comment In:
Br Vet J. 1996 Jan;152(1):13-5   [PMID:  8634861 ]

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