(AN; Auditory Dyssynchrony; Auditory Synaptopathy; Neuropathy, Auditory; Auditory Processing Disorder)
Pronounced: AW-dih-tore-ee new-ROP-ah-thee
by Mary Cresse
Auditory neuropathy (AN) occurs when the nerve system of the inner ear fails to process sounds coming from the outer ear.
The outer ear sends vibrations to the inner ear during the hearing process. Hair cells in the inner ear break down the vibrations into electrical signals. These are sent to the brain. The brain filters them as sound. There is debate about the exact cause of AN. It may be due to:
These factors increase your chance of developing AN:
Tell your doctor if you or your child has any of these risk factors.
If you have any of these symptoms do not assume it is due to AN. These symptoms may be caused by other conditions.
Hearing loss symptoms may include:
The level of hearing loss can vary from mild to severe. People with AN may have trouble picking out words. Many cases involve children.
Your doctor will ask about your symptoms and medical history. A physical exam will be done. Tests may include:
Talk with your doctor about the best treatment plan for you. Treatment options include the following:
Goals of treatment include:
The exact cause of AN is unknown. However, these steps may help:
American Speech-Language-Hearing Association
National Institute on Deafness and Other Communication Disorders
Canadian Association of Speech Language Pathologists and Audiologists
Ontario Association for Speech-Language Pathologists and Audiologists
Auditory neuropathy. National Institute on Deafness and Other Communication Disorders website. Available at:
Causes of hearing loss. My Baby’s Hearing website. Available at:
Cochlear implants. American Academy of Otolaryngology website. Available at:
Ototoxicity. American Academy of Otolaryngology website. Available at:
Last reviewed August 2013 by Rimas Lukas, MD; Michael Woods, MD