Hearing Loss: Age-Related or Something Serious?
Turning up the television a little louder. Asking people to repeat themselves more often. Missing words in a busy restaurant. These things happen so gradually that most people do not notice them for years. By the time hearing loss becomes impossible to ignore, it has often been progressing quietly for a decade or more.
The question most people eventually ask is whether what they are experiencing is simply part of getting older or a sign of something that needs attention. The honest answer is that it can be either, and sometimes both. Knowing the difference matters because some causes of hearing loss are treatable or even reversible, but only if they are caught and addressed in time.
What age related hearing loss actually is
Presbycusis is age-related hearing loss that develops gradually as a person gets older. It is a type of sensorineural hearing loss related to damage in the inner ear.
Age-related hearing loss usually begins around 50 years of age and affects approximately 40% of adults over age 65. Many older adults think hearing loss is simply a normal part of ageing and fail to get diagnosed. That assumption has real consequences. Untreated hearing loss has been linked to cognitive decline, social isolation, depression, and an increased risk of falls.
The first sign of age-related hearing loss is difficulty to hear high pitched sounds. Consonants are more difficult to differentiate. The speech begins to seem muted, not lost. It develops slowly and involves both ears more or less equally. One of the hallmarks of this steady and symmetrical pattern is the suggestion that ageing is the main cause.
Hearing loss causes that go beyond ageing
Age is not the only explanation for declining hearing. Several other hearing loss causes can produce similar symptoms but have very different implications and treatment requirements.
- Noise damage
Prolonged or repeated exposure to loud noise is one of the leading causes of sensorineural hearing loss in people of all ages. Construction workers, musicians, factory workers, and people who regularly use earphones at high volumes are all at risk. Noise-induced hearing loss is permanent. The hair cells in the inner ear that are destroyed by loud sound do not regenerate. Prevention is the only real solution.
- Ear infections and fluid
Repeated middle ear infections or fluid behind the eardrum can cause a type of hearing loss called conductive hearing loss, where sound is physically blocked from reaching the inner ear. Unlike sensorineural hearing loss, this type is often temporary and responds well to treatment. Treating the underlying infection or draining the fluid typically restores hearing. This is more common in children but can occur in adults as well.
- Earwax buildup
Impacted earwax is a surprisingly common and easily missed cause of sudden or gradual hearing loss. It is entirely reversible once the blockage is cleared. Anyone who notices a sudden change in hearing, particularly in one ear, should have their ears examined for wax buildup before assuming something more serious is at play.
- Acoustic neuroma
An acoustic neuroma is a non-cancerous tumour that grows on the nerve connecting the inner ear to the brain. A CT scan or MRI may be performed if a tumour is suspected as a cause of hearing loss. The pattern of hearing loss in acoustic neuroma tends to affect one ear more than the other, which distinguishes it from the typical bilateral pattern of age related hearing loss. Tinnitus in one ear alongside one-sided hearing loss should always be investigated.
- Sudden sensorineural hearing loss
This is a medical emergency that is frequently dismissed as a blocked ear or a cold. Sudden sensorineural hearing loss involves a rapid loss of hearing, usually in one ear, over a period of hours to days. Treatment with corticosteroids is most effective when started quickly. Waiting several days before seeking help significantly reduces the chance of recovery. Anyone who wakes up with sudden hearing loss in one ear should seek medical attention the same day.
- Medications
Certain medications are ototoxic, meaning they can damage the inner ear and cause permanent hearing loss. These include some chemotherapy drugs, certain antibiotics, and high doses of aspirin or loop diuretics. Anyone starting these medications should discuss hearing monitoring with their doctor.
Signs that something more than ageing is going on
Age-related hearing loss affects both ears gradually and symmetrically. Certain patterns suggest a different cause and warrant prompt investigation:
- Hearing loss in just one ear or much worse in one ear than the other
- Rapid onset of hearing loss, rather than a gradual loss
- Tinnitus with unilateral hearing loss
- Balance problems or dizziness with hearing loss
- Hearing loss in a young person with no major history of noise exposure
When to see a doctor for hearing loss
Many older adults assume hearing loss is a normal part of ageing and fail to get diagnosed, but untreated hearing loss can significantly impact emotional, physical, and social aspects of daily life. A hearing assessment is a straightforward test. An audiologist can map exactly which frequencies are affected and how severely, and an ENT specialist can investigate whether there is a treatable underlying cause.
Untreated hearing loss can cause problems receiving important information, limit interaction with family and friends leading to loneliness and depression, and pose a safety risk when sounds like car horns or alarms cannot be heard.
For age-related hearing loss, hearing aids remain the most effective intervention. They do not restore hearing to normal, but they substantially improve speech understanding and quality of life. For certain patients, cochlear implants are an option when hearing loss is severe.
Takeaways
Causes of hearing loss include the slow deterioration of ageing, as well as more catastrophic disorders such as acoustic neuroma, abrupt sensorineural hearing loss and ototoxic drug harm. Age-related hearing loss usually affects both ears symmetrically and slowly and usually begins with high-pitched sounds.
Sudden start of unilateral hearing loss, tinnitus in one ear or hearing loss in a younger person all merit a rapid ENT assessment. Timely recognition of when to seek a doctor’s help for hearing loss can make a major difference in results, particularly for conditions where early treatment is most beneficial.