Cerumen impaction, the medical term for earwax buildup severe enough to block the ear canal, affects approximately 10 per cent of Australian adults and over 30 per cent of older adults in aged care settings, according to the Australian Institute of Health and Welfare. Despite how common it is, earwax buildup hearing loss is frequently misdiagnosed or ignored. Many people assume their hearing is declining permanently when the real cause is a blockage that can be resolved in a single clinic visit. Understanding how earwax works, recognising the signs of a blockage, and knowing which removal methods are safe can protect your hearing and prevent unnecessary worry.
What Earwax Is and Why It Matters
Earwax, medically known as cerumen, is a naturally occurring substance produced by glands in the outer ear canal. It is a mixture of secretions from sebaceous and ceruminous glands, combined with dead skin cells, dust, and debris. Far from being a waste product, earwax serves several essential functions. It acts as a protective barrier that traps dust, dirt, and microorganisms before they can reach the eardrum. Its slightly acidic pH inhibits bacterial and fungal growth, reducing the risk of ear infections. Earwax also lubricates the ear canal, preventing the skin from becoming dry, itchy, and prone to cracking.
In a healthy ear, wax migrates outward naturally through jaw movement during chewing and talking, carrying trapped debris with it. The wax dries and falls out of the ear opening without any intervention. This self-cleaning mechanism works reliably for most people. Problems arise when this natural migration process is disrupted, causing wax to accumulate and compact inside the canal.
How Earwax Buildup Causes Hearing Problems
When earwax accumulates and hardens into a plug, it creates a physical barrier in the ear canal. This blockage prevents sound waves from reaching the eardrum, resulting in a type of hearing loss known as conductive hearing loss. Unlike sensorineural hearing loss, which involves damage to the inner ear or auditory nerve, conductive hearing loss from wax is entirely mechanical. Sound cannot pass through the blocked canal, but the structures of the middle and inner ear remain intact.
The degree of hearing reduction depends on how much of the canal is obstructed. Research published in the Journal of the American Academy of Audiology has shown that a complete cerumen impaction can reduce hearing by up to 40 decibels, which is equivalent to moderate hearing loss. Even a partial blockage can reduce hearing by 10 to 20 decibels, enough to make speech sound muffled and conversations difficult to follow, particularly in noisy environments.
Earwax blockage can also cause secondary symptoms that compound hearing difficulties. Pressure from impacted wax against the eardrum can trigger tinnitus, a ringing or buzzing sensation. It can create a feeling of fullness or pressure that makes your own voice sound hollow or echo-like, a sensation called autophony. In some cases, the pressure stimulates the vagus nerve, which runs through the ear canal, producing a persistent cough reflex. These symptoms often appear alongside the hearing reduction, making the overall experience more disruptive than the hearing loss alone would suggest.
Symptoms of Earwax Blockage
Earwax impaction does not always cause noticeable symptoms, especially in its early stages. As the blockage grows, the following signs typically develop:
- Sudden or gradual hearing reduction, often more noticeable in one ear. Sounds become muffled, as if you are listening through a wall or underwater.
- A feeling of fullness or pressure in the affected ear. Many people describe it as similar to the sensation during a flight when their ears have not popped.
- Tinnitus, ranging from a faint high-pitched ring to a louder buzzing or humming that may be constant or intermittent.
- Earache or discomfort, caused by the wax plug pressing against the sensitive skin of the ear canal or the eardrum itself.
- Itching inside the ear canal, which occurs when wax builds up and the canal skin becomes irritated or when water gets trapped behind the blockage.
- Odour or discharge, which can develop if bacteria multiply in the moisture trapped behind the wax plug.
- A persistent cough, triggered by pressure on the vagus nerve branch that runs through the ear canal.
If you experience several of these symptoms together, particularly the combination of muffled hearing and ear pressure, cerumen impaction is a likely explanation. A comprehensive hearing test combined with an otoscopic examination can confirm whether wax is the cause and rule out other forms of hearing loss.
Safe Earwax Removal Methods
The right removal method depends on the severity of the blockage, the consistency of the wax, and whether you have any underlying ear conditions such as a perforated eardrum or a history of ear surgery.
What Not to Do
Before covering safe methods, it is critical to address the most common and dangerous mistake people make: inserting objects into the ear canal. Cotton buds are the single worst tool for earwax removal. They do not extract wax. They push it deeper into the canal, compacting it against the eardrum and making the blockage worse. Cotton buds are responsible for thousands of ear injuries in Australia each year, including eardrum perforations, canal abrasions, and secondary infections. Hairpins, pen caps, fingers, and any other implement should never enter the ear canal for the same reasons.
Ear candles are another method to avoid. The Australian Government's Therapeutic Goods Administration has issued warnings against ear candling, noting that there is no scientific evidence supporting its effectiveness and that it carries real risks of burns, eardrum damage, and candle wax deposits in the ear canal. The practice can cause serious injury without providing any benefit.
Wax-Softening Drops
For mild to moderate wax buildup, over-the-counter wax-softening ear drops can be effective. These drops contain ingredients such as carbamide peroxide, glycerin, or mineral oil that break down hardened wax and help it migrate out of the canal naturally. Apply the drops as directed, usually for three to five days, and lie on your side for several minutes after each application to allow the drops to penetrate. This approach works best for soft or moderately hard wax and is not suitable if you suspect a perforated eardrum or have ear pain.
Professional Removal by an Audiologist or GP
When wax is deeply impacted, hard, or causing significant symptoms, professional removal is the safest and most effective option. Audiologist services typically include earwax removal using one of three methods:
- Microsuction, where a small vacuum device under microscopic guidance gently extracts the wax. This is the gold standard method because it is precise, does not involve water, and carries minimal risk of infection or eardrum damage. It is suitable for most patients, including those with perforated eardrums.
- Irrigation (ear syringing), where warm water is gently flushed into the ear canal to dislodge the wax. This method is effective for softer wax but is not suitable for people with a history of eardrum perforation, ear surgery, or certain middle ear conditions.
- Manual removal with instruments, where the audiologist uses specially designed tools such as curettes or forceps under direct visualisation to carefully extract the wax plug. This method is often combined with microsuction for stubborn impactions.
Professional removal is typically quick, taking 10 to 20 minutes, and most patients experience immediate improvement in hearing once the blockage is cleared.
When to See an Audiologist
You should seek professional help for earwax removal in several circumstances. If over-the-counter drops have not resolved your symptoms after five to seven days of use, the blockage likely requires professional intervention. Sudden hearing loss in one ear that is accompanied by pain, discharge, dizziness, or fever needs urgent assessment to rule out infection or a more serious condition. If you wear hearing aids, regular earwax checks are essential because hearing aids and earplugs are among the most common causes of wax impaction. They block the natural outward migration of wax and can push wax deeper each time the device is inserted.
People with narrow ear canals, a history of recurrent impaction, or skin conditions such as eczema or psoriasis affecting the ear canal are more prone to wax problems and may benefit from scheduled professional removal every six to twelve months. Older adults are also at higher risk because earwax tends to become harder and drier with age, and the natural migration process slows down.
Perhaps most importantly, any hearing change warrants professional evaluation. While earwax is a common and easily treatable cause, hearing loss has many possible origins. A qualified audiologist at one of our Melbourne locations can examine your ears, determine the cause of your symptoms, and provide appropriate treatment or referral. Misdiagnosing sensorineural hearing loss as a wax blockage can delay necessary treatment, so professional assessment is always the wisest course of action.
Frequently Asked Questions
Can earwax buildup cause permanent hearing loss?
No, earwax buildup does not cause permanent hearing loss. The hearing reduction caused by cerumen impaction is conductive, meaning sound is physically blocked from reaching the eardrum. Once the wax is removed by a professional, hearing returns to its previous level. However, leaving impacted wax for extended periods can lead to outer ear infections or eardrum irritation, so prompt removal is recommended.
What is the safest way to remove earwax at home?
The safest at-home approach is to use wax-softening ear drops available from a pharmacy, which help the wax work its way out naturally. You can also gently wipe the outside of the ear opening with a warm flannel. Never insert cotton buds, hairpins, or any object into the ear canal, as this pushes wax deeper and risks eardrum perforation. If symptoms persist after a few days of using drops, see an audiologist or GP for professional removal.
How do you know if your ear is blocked with wax?
Common signs of an earwax blockage include a feeling of fullness or pressure in the ear, muffled hearing, tinnitus (ringing or buzzing), mild earache, itching inside the ear canal, and sometimes a mild cough caused by pressure on the vagus nerve. If you experience sudden hearing reduction in one ear along with any of these symptoms, wax impaction is a likely cause.
How often should you have earwax removed professionally?
Most people do not need routine professional earwax removal. The ear is self-cleaning and wax naturally migrates out of the canal. However, some people produce more wax or wear hearing aids or earplugs that block this natural process. If you are prone to impaction, your audiologist may recommend professional removal every six to twelve months. People who wear hearing aids should have their ears checked at each adjustment visit.
Works Cited
Australian Institute of Health and Welfare. "Ear and Hearing Health." AIHW, Australian Government, 2024, aihw.gov.au/reports/australias-health/hearing-health.
Hearing Australia. "Earwax and Hearing." Australian Government, 2024, hearing.com.au.
Schwartz, S. R., et al. "Clinical Practice Guideline: Earwax (Cerumen Impaction)." Otolaryngology: Head and Neck Surgery, vol. 156, no. 1 suppl, 2017, pp. S1-S29.
Ahmad, N., and R. F. Seidman. "Cerumen Impaction." Primary Care: Clinics in Office Practice, vol. 41, no. 1, 2014, pp. 105-113.
Therapeutic Goods Administration. "Ear Candles: Safety Warning." Australian Government Department of Health, 2023, tga.gov.au.