Hearing loss affects people of all ages. Statistics Canada reports 1 in 5 Canadians experience some degree of hearing loss that can arise from a number of different causes. Hearing loss impacts the quality of life for you and your loved ones. The American Speech-Language-Hearing Association reports hearing loss can be linked to fatigue, social isolation and depression. The good news is, help is available.
What type of hearing loss do you have?
Hearing loss is commonly categorized into three main types based on the location where it occurs:
Sensorineural Hearing Loss
Sensorineural hearing loss refers to hearing loss as a result of damage in the inner ear, primarily the organ of hearing known as the cochlea, and/or the auditory nervous system. It is the most common type of hearing loss and is permanent but treatable.
Sensorineural hearing loss is most often related to aging and/or exposure to loud noise, either from a sudden loud sound or long-term exposure to a noisy environment.
Other causes of sensorineural hearing loss include:
Those suffering with sensorineural hearing loss typically experience a reduced ability to hear a range of sounds and often reduced clarity of speech.
Both how loudly (volume) and how clearly (clarity) you perceive sound are affected. Common signs that you may be experiencing sensorineural hearing loss include if you:
Age-related and/or noise-induced hearing loss is permanent but can be effectively treated using hearing aids. Hearing loss caused by viral or bacterial infections can sometimes be reversed with the timely use of medication. Medication that causes hearing loss as a side effect can be swapped for an alternate medicine that has fewer hearing related side effects, as prescribed by a physician and when available.
When hearing aids are not enough to overcome damage in the inner ear or auditory nervous system and are not able to help you hear well, cochlear implants may be an option.
While age-related hearing loss cannot be avoided, prevention of noise-induced hearing loss should always be taken seriously whether we are five or 95 years old. It is always recommended to use good quality ear plugs or earmuffs when in loud noise to prevent noise-induced hearing loss and protect your hearing health.
Conductive Hearing Loss
Conductive hearing loss refers to hearing loss in the outer ear and/or middle ear and includes the ear canal, ear drum, and the middle ear bones. Conductive hearing loss may be temporary or permanent, depending on the cause.
Conductive hearing loss occurs when there is a blockage in the pathway for sound to travel from the outer ear and middle ear to the inner ear, or by conditions causing the ear drum or middle ear bones to not properly function.
Common causes of conductive hearing loss are:
Similar to the symptoms of sensorineural hearing loss, conductive hearing loss will cause a reduced ability to hear sound, but not clarity. Often, a sensation of fullness or ‘plugged’ ears is experienced along with tinnitus. If an infection is present, pain or drainage may also accompany the hearing loss.
Many causes of conductive hearing loss are treatable to the extent that hearing loss can either be significantly reduced or reversed all together. Treatment can include removal of excess earwax, prescription of antibiotics for infection, or surgery by an otolaryngologist (ear, nose and throat doctor). For any residual hearing loss that cannot be reversed, the use of a hearing aid is often effective. Bone-anchored hearing systems also may be a good option.
Mixed Hearing Loss
Mixed hearing loss refers to the presence of both sensorineural and conductive hearing loss and occurs in the inner ear and/or auditory nervous system and the outer and/or middle ear.
Mixed hearing loss is caused by a combination of conditions leading to sensorineural and conductive hearing loss. For example, a person with age-related sensorineural hearing loss with earwax blockage, or a person with noise-induced sensorineural hearing loss with an ear infection.
As with sensorineural and conductive hearing loss, symptoms include a reduced ability to hear sounds, particularly with reduced clarity in understanding speech. Other symptoms can include tinnitus, a sensation of fullness in the ears, pain and/or fluid discharge.
Treating mixed hearing loss often starts with determining how to address the conductive component of the hearing loss, which can include antibiotics, removal of excess earwax, or surgery. Once the conductive component of hearing loss has been treated, hearing aids are most commonly prescribed to treat residual conductive hearing loss or permanent sensorineural hearing loss.
How to get help
There are several factors that can contribute to hearing loss in the outer, middle, and inner ears or auditory nervous system. Some of the causes or conditions can be reversed, but most often hearing loss is permanent and can be treated with prescribed hearing aids or other options. If you are experiencing any symptoms indicative of hearing loss, be sure to visit a local hearing clinic near you and speak to a hearing healthcare professional who will assess your hearing loss and discuss the best treatment options for you.