Sudden Sensorineural Hearing Loss; SSHL


Deafness is a severe or complete loss of hearing. Deafness can occur in one or both ears. It can happen slowly or suddenly. Early detection and management can lessen the impact on quality of life.
Types of deafness may include:
Anatomy of the Ear
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Sound waves travel from the outside and through structures in the outer, middle, and inner ear. The auditory nerve transmits the signal to the brain where it is translated into sound. Interruption of the sound wave can occur in the ear structures, the auditory nerve, or in the brain where sound waves are translated. This interruption can result in deafness.
Deafness can be present at birth (or soon after) or acquired anytime throughout life. In many cases, the cause of deafness may be unknown.

Risk Factors

Factors related to fetal development and birth that may increase the chance of deafness include:
Factors that may increase the chance of acquired deafness may include:


Symptoms may be gradual or sudden depending on the cause. Signs of deafness can occur at any age. Some symptoms include:
Symptoms of deafness in infants and toddlers may be noted at these stages:
All children, including newborns, should be screened for hearing loss.


You will be asked about your symptoms and medical history. A physical exam will be done. As part of the diagnosis, your doctor may try to determine the following:
Your ears may be tested. This can be done with:
Images may be taken of your ears and surrounding structures. This can be done with:


Treatment for deafness depends on the cause. Some types are permanent and cannot be treated. Lifestyle changes are an important part of coping with deafness. Some forms of deafness can be partially treated with surgery. You and your doctor will discuss the best treatment options for you.

Lifestyle Changes

Lifestyle changes may include:
  • Learning sign language and/or lip reading to improve communication skills
  • TTY—a means of communication over the phone by using a keyboard
  • Using writing as a means of communication
  • Using closed captioning
If you are planning to go to a new place, such as a theater or hotel, find out what accommodations or assistance is available before you arrive.
It is common to feel isolated and removed in social situations. This can lead to feelings of depression or social anxiety. Part of managing deafness may include counseling or a support group.


A cochlear implant directly stimulates part of the brain and uses a tiny computer microprocessor to sort out incoming sound. It can be for certain types of hearing loss that affect the inner ear.


Deafness may not be preventable in all people. Hearing screening for newborns can help ensure that hearing loss in young babies is detected and treated at the earliest possible stage. This will lessen the impact on your baby's life.
To help reduce the chance of deafness for you or your child:


National Association of the Deaf

National Institute on Deafness and Other Communication Disorders (NIDCD)


Canadian Association of the Deaf

Canadian Hearing Society


Adjusting to hearing loss. Hearing Link website. Available at: Accessed September 11, 2015.

Deafness—a range of causes. State Government of Victoria Better Health website. Available at: Updated June 2011. Accessed September 11, 2015.

Deafness and hearing loss. World Health Organization website. Available at: Accessed September 11, 2015.

Plaza G, Herráiz C. Intratympanic steroids for treatment of sudden hearing loss after failure of intravenous therapy. Otolaryngol Head Neck Surg. 2007 Jul;137(1):74-78.

Sudden deafness. Merck Manual Professional Version website. Available at: Updated October 2012. Accessed September 11, 2015.

Sudden deafness. National Institute on Deafness and Other Communication Disorders (NIDCD) website. Available at: Updated November 2013. Accessed September 11, 2015.

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