Introduction: Course objectives

Audiology Practice

How the Ear Works

Hearing Loss

Audiogram

Types of HL

Degrees of HL

Etiology of HL

Prevalance of HL

Detecting and Diagnosing Hearing Loss in Children

Intervention for Children with Permanent HL

Case studies

Resources

Credits and Acknowledgements

 

Last updated: 10-sep-10

Types of Hearing Loss

Conductive Hearing Loss

If there is a problem in the external or middle ear, a conductive hearing loss exists. This means sound is not being conducted properly to the inner ear. Common causes of conductive hearing loss are ear wax (cerumen) in the external ear, fluid in the middle ear, or a hole or tear (perforation) in the eardrum. Most types of conductive hearing loss can be treated medically or surgically.

Sensorineural Hearing Loss

If a problem occurs in the inner ear, the hearing loss is sensorineural. Sensorineural hearing loss usually cannot be cured medically or surgically, but the use of hearing aids or other amplifying systems can help children hear and develop speech and language.

Mixed Hearing Loss

Children with sensorineural hearing loss also can develop middle ear problems (such as fluid in the middle ear) This can make the infant's hearing loss worse. When there is a combination of two problems (sensorineural and conductive hearing loss), this is known as a mixed hearing loss.

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Center on Human Development and Disability, UW LEND, University of Washington,
Box 357920, Seattle, WA 98195-7920 lend@uw.edu