Health Library

Sensorineural deafness

Nerve deafness; Hearing loss - sensorineural; Acquired hearing loss; SNHL; Noise-induced hearing loss; NIHL; Presbycusis

Sensorineural deafness is a type of hearing loss. It occurs from damage to the inner ear, the starting point of the nerve that runs from the ear to the brain (auditory nerve), or damage to the brain itself.

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Considerations

Symptoms may include:

• Some sounds seem overly loud in one ear.
• You have problems following conversations when two or more people are talking.
• You have problems hearing in noisy areas.
• It is easier to hear men's voices than women's voices.
• It is hard to tell high-pitched sounds (such as "s" or "th") from one another.
• Other people's voices sound mumbled or slurred.
• You have problems hearing when there is background noise.

Associated symptoms may include:

• Feeling of being off-balance or dizzy (more common in people with Meniere disease or acoustic neuromas)
• Ringing or buzzing sound in the ears (tinnitus)

Causes

The inner part of the ear contains tiny hair cells (nerve endings), that change sounds into electric signals. The nerves then carry these signals to the brain.

Sensorineural hearing loss (SNHL) is caused by damage to these special cells, or to the nerve fibers in the inner ear. Sometimes, the hearing loss is caused by damage to the nerve that carries the signals to the brain.

Sensorineural deafness that is present at birth (congenital) is most often due to:

• Genetic conditions
• Infections that the mother passes to her baby in the womb (for example toxoplasmosis, rubella, or herpes)

SNHL may develop in children or adults later in life (acquired) as a result of:

• Age-related hearing loss
• Disease of the blood vessels
• Immune disease
• Infections, such as meningitis, mumps, scarlet fever, and measles
• Injury of the ear or head
• Loud noises or sounds, or loud sounds that last for a long time
• Meniere disease
• Tumor, such as acoustic neuroma
• Use of certain medicines
• Working around loud noises frequently

In some cases, the cause is unknown.

What to Expect at Your Office Visit

The goal of treatment is to improve your hearing. The following may be helpful:

• Hearing aids
• Telephone amplifiers and other assistive devices
• Safety and alert systems for your home
  
• Sign language (for those with severe hearing loss)
• Speech reading (such as lip reading and using visual cues to aid communication)

A cochlear implant may be recommended for certain people with severe hearing loss. Surgery is done to place the implant. The implant makes sounds seem louder but does not restore normal hearing.

You will also learn strategies for living with hearing loss and advice to share with those around you for talking to someone with hearing loss.

Related Information

References

Doyle EJ, Hertzano R, Tucci D, Samy RN. Sensorineural hearing loss in adults. In: Francis HW, Haughey BH, Hillel AT, et al, eds. Cummings Otolaryngology. 8th ed. Philadelphia, PA: Elsevier; 2026:chap 150.

Eggermont JJ. Types of hearing loss. In: Eggermont JJ, ed. Hearing Loss. Cambridge, MA: Elsevier Academic Press; 2017:chap 5.

Kerber KA, Baloh RW. Neuro-otology: diagnosis and management of neuro-otological disorders. In: Jankovic J, Mazziotta JC, Pomeroy SL, Newman NJ, eds. Bradley and Daroff's Neurology in Clinical Practice. 8th ed. Philadelphia, PA: Elsevier; 2022:chap 22.

Klimara MJ, Thorpe RJ, Smith RJH. Genetic sensorineural hearing loss. In: Francis HW, Haughey BH, Hillel AT, et al, eds. Cummings Otolaryngology. 8th ed. Philadelphia, PA: Elsevier; 2026:chap 148.

Le Prell CG, Hoffer ME. Noise-induced hearing loss. In: Francis HW, Haughey BH, Hillel AT, et al, eds. Cummings Otolaryngology. 8th ed. Philadelphia, PA: Elsevier; 2026:chap 152.

National Institute on Deafness and Other Communication Disorders website. Noise-induced hearing loss. www.nidcd.nih.gov/health/noise-induced-hearing-loss. Updated April 16, 2025. Accessed May 28, 2026.

Review Date: 4/29/2026  

Reviewed By: Ashutosh Kacker, MD, FACS, Professor of Clinical Otolaryngology, Weill Cornell Medical College, and Attending Otolaryngologist, New York-Presbyterian Hospital, New York, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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