"Congenital deafness" means that someone is born deaf, and they cannot hear or have difficulty hearing from the time they are born.
Full definition
The prevalence of
congenital deafness in different breeds is seldom known because of the limited number of studies (see table).
While some dogs do have hearing loss in old age, the most common
cause congenital deafness in Australian Shepherds relates to the amount of white on or around the ears.
This could help to identify the causes of conditions such
as congenital deafness and some learning disabilities.
This gene is associated
with congenital deafness in some breeds including bull terriers, Samoyeds, bulldogs and beagles.
Cavaliers can suffer
from congenital deafness which is present at birth and is due to a lack of formation or early degeneration of receptors in the inner ear.
Some health issues to be aware of in the Chinese crested
include congenital deafness, hypothyroidism, patellar luxation, Legg - Perthes disease and several eye problems, including progressive retinal atrophy, glaucoma and lens luxation.
Certain dog breeds are more commonly affected
by congenital deafness, including the Dalmatian, English Setter, Havanese, and more.
CMO Thyroid vWD Hip Dysplasia Legg - Calve - Perthes Disease Patella Luxation Elbow Dysplasia Cardiac
Disease Congenital Deafness Sebaceous Adenitis Genetic Eye Disorders
Although congenital deafness can not be reversed, a variety of medicines and surgical measures can be effective in countering the progression of an acquired condition that, if untreated, can lead to a total loss of hearing.
It is usually impossible to determine the cause of
congenital deafness unless a clear problem has been observed in the breed, or carefully planned breedings are performed.
Some of the other common health concerns for this breed
include congenital deafness, pattern baldness, sick sinus syndrome, ocular disorders, lipomas, patellar luxation, Cushing's syndrome, allergies, dental problems and hereditary epilepsy.
Strain says although researchers still aren't sure what
causes congenital deafness, they do know it's most common in dogs with white or nearly white heads.
Wayne Grody, director of the Molecular Diagnostics Laboratories at the University of California, Los Angeles Medical Center, says his lab plans to offer tests for 15 to 20 previously patented genes, including those for
congenital deafness and neurological diseases.
What they did not know was that two of them carried a recessive gene for
congenital deafness.
In addition, Charlie has
congenital deafness and a severe epilepsy disorder,» the hospital says on its website.
It's the kind of loss of hearing that generally has a tendency to happen as one ages, or with children born having
congenital deafness.
Congenital deafness is a disorder that is associated with the pigmentation of dogs.
This can often lead to a lack of pigment in their ears, causing
congenital deafness.
Certain breeds — including Dalmatians, English setters, Australian shepherds and Jack Russell terriers — are prone to
congenital deafness.
While Pennhip focuses on hips the OFA tests tracks and scores the entire canine genetic health including cardiac disease,
congenital Deafness, elbow dysplasia, eyes, hip dysplasia, Legg - Calve - Perthes Disease, shoulder OCD, thyroid, tracheal hypoplasia, and dna testing.
Hip dysplasia and
congenital deafness is possible as both parent breeds are prone to these heritable conditions.
Certain breeds - including Dalmatians, English setters, Australian shepherds and Jack Russell terriers - are prone to
congenital deafness.
In addition,
congenital deafness appears to be associated with pigmentation; pure white or predominantly white dogs have a higher rate of congenital deafness.
Some of the other health problems common in the breed include bloat, hip dysplasia, hypertrophic dystrophy, bone cancer,
congenital deafness, entropion / ectropion, and Wobbler's syndrome.
The piebald gene is also linked to
congenital deafness in some breeds.
Congenital deafness is often associated with merle or piebald coat patterns.
Canine hearing research has linked the loss of melanin containing cells in the hearing apparatus directly to
congenital deafness in the dog.
Some breeds, for example Dalmatians, are prone to hearing issues and
congenital deafness has been reported in up to 85 breeds.
Havanese, like any breed, can have
congenital deafness.
Certain breeds are prone to
congenital deafness (deafness at birth).
Congenital deafness is present in many dog breeds, especially those with merle or piebald color variants.
Blue - eyed non-merle Aussies are not prone to
congenital deafness.
Strain says he has identified 89 dog breeds with incidences of
congenital deafness, some much higher than others.
Congenital deafness has been reported in sixty breeds, but it is uncommon in most and usually not proven to be inherited.