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The Molecular Genetics Laboratory, in partnership with the Ear and Hearing Center, helps patients and families understand the diagnostic evaluation process for hearing loss.
SNHL has many causes. For most children, the cause is not obviously known, and your ear specialist (pediatric otologist) will take a thorough medical history and perform a physical examination.
Genetic factors account for hearing loss in over half of children with SNHL. Genetic hearing loss is related to the passage of genes that cause hearing loss through a family.
The two main forms of genetic hearing loss are:
Nongenetic factors are also important contributors to SNHL and include:
A child with SNHL may have different types of diagnostic tests to determine the cause of hearing loss.
These tests might include:
In addition to undergoing various medical tests, a child may be referred to a geneticist (or other specialist) for further evaluation to determine the cause of hearing loss.
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