Tinnitus affects approximately 18 per cent of the Australian population at some point in their lives, according to Hearing Australia. That persistent ringing, buzzing, hissing, or clicking sound that no one else can hear is not a disease itself but a symptom of an underlying issue. Understanding what causes tinnitus helps determine the right course of action and, in many cases, opens the door to effective tinnitus management strategies that reduce its impact on daily life.
How Tinnitus Develops
Sound enters the ear as vibrations and travels through the outer ear canal to the eardrum, then through the middle ear bones to the cochlea in the inner ear. The cochlea contains thousands of microscopic hair cells that convert these vibrations into electrical signals sent to the brain via the auditory nerve. When these hair cells become damaged or the nerve pathways are disrupted, the brain compensates by increasing its internal sensitivity. This heightened neural activity produces the phantom sounds we call tinnitus. The nature and severity of those sounds depend on which part of the auditory system has been affected and how extensively.
Common Tinnitus Causes
Noise-Induced Hearing Damage
Exposure to loud noise is the single most common cause of tinnitus. Prolonged exposure to sounds above 85 decibels, roughly the level of heavy city traffic, can damage the hair cells in the cochlea. A single intense event such as a concert, an explosion, or gunshot can also trigger tinnitus immediately. Occupations with regular noise exposure, including construction, manufacturing, mining, and live music production, carry a particularly high risk. The damage accumulates over time, which means the ringing in ears causes may not become apparent until years after the exposure occurred. Protecting your hearing with earplugs or earmuffs in noisy environments is one of the most effective ways to prevent noise-induced tinnitus.
Age-Related Hearing Loss (Presbycusis)
Hearing naturally declines with age. This progressive loss, called presbycusis, typically begins after age 50 and affects the higher frequencies first. As the hair cells in the cochlea gradually deteriorate, the brain tries to fill in the missing auditory information, producing tinnitus. Research published in the journal Age and Ageing found that approximately 30 per cent of people over 65 experience tinnitus, and the incidence rises with each decade. Age-related hearing loss and tinnitus frequently occur together because they share the same underlying mechanism of cochlear damage.
Earwax Blockage (Cerumen Impaction)
The ear produces wax to protect the ear canal from dust, debris, and bacteria. Sometimes wax accumulates and hardens, creating a blockage that presses against the eardrum. This physical obstruction alters pressure in the ear canal and can irritate the tympanic membrane, producing tinnitus. Cerumen impaction is one of the most treatable tinnitus causes. An audiologist or GP can remove the blockage safely, often resolving the tinnitus immediately. Attempting to remove wax with cotton swabs or ear candles can push it deeper or cause further damage, making the tinnitus worse.
Ear Infections and Middle Ear Conditions
Acute otitis media, a middle ear infection, creates fluid buildup behind the eardrum that changes pressure and conductivity in the middle ear. This pressure change can trigger tinnitus. Chronic ear infections, otosclerosis (abnormal bone growth in the middle ear), and Eustachian tube dysfunction can all produce persistent ringing or buzzing sounds. Most infection-related tinnitus resolves once the infection clears, but recurring or untreated infections can cause permanent damage to the middle ear structures and lead to chronic tinnitus.
Less Common Tinnitus Causes
Meniere's Disease
Meniere's disease is an inner ear disorder caused by abnormal fluid pressure in the endolymphatic compartment of the inner ear. It produces a distinctive triad of symptoms: episodic vertigo, fluctuating hearing loss, and tinnitus, often accompanied by a feeling of fullness in the affected ear. The tinnitus associated with Meniere's disease tends to be low-pitched, described as a roaring or humming sound, and it often worsens before or during vertigo attacks. This condition requires specialist management, and early diagnosis improves long-term outcomes.
Temporomandibular Joint (TMJ) Disorders
The temporomandibular joint sits just in front of the ear, and the nerves and muscles of the jaw are closely connected to those of the middle ear. TMJ disorders, which include jaw joint dysfunction, teeth grinding (bruxism), and muscle tension in the jaw and neck, can produce somatic tinnitus. This type of tinnitus changes in pitch or intensity with jaw movements, head position, or neck tension. Treating the underlying TMJ issue through dental splints, physiotherapy, or stress management often reduces or eliminates the tinnitus.
Head and Neck Injuries
Trauma to the head or neck can damage the auditory nerve, disrupt blood flow to the inner ear, or alter the neural pathways between the ear and brain. Whiplash injuries from car accidents are a well-documented tinnitus trigger. Even mild concussions can produce tinnitus by affecting how the brain processes auditory signals. A study published in JAMA Otolaryngology found that patients with traumatic brain injury were significantly more likely to develop tinnitus compared to the general population. Post-injury tinnitus should always be evaluated with a thorough hearing assessment.
Ototoxic Medications
Certain medications can damage the inner ear or disrupt the auditory nerve, producing tinnitus as a side effect. These drugs are classified as ototoxic. Common ototoxic medications include high-dose aspirin and other salicylates, aminoglycoside antibiotics such as gentamicin and tobramycin, loop diuretics like furosemide, certain chemotherapy agents including cisplatin, and some tricyclic antidepressants. Tinnitus caused by medication may be temporary and resolve once the drug is discontinued, but some ototoxic damage can be permanent. If you notice tinnitus after starting a new medication, consult your prescribing doctor immediately. Do not stop taking prescribed medication without medical guidance.
Tinnitus Triggers That Worsen Symptoms
While the above are direct tinnitus causes, several factors can act as tinnitus triggers that amplify existing symptoms. Loud environments, even at moderate levels, can temporarily spike tinnitus intensity. Caffeine and alcohol affect blood flow and neural excitability, making the phantom sounds more noticeable for some people. Stress and anxiety heighten the brain's focus on tinnitus, creating a feedback loop where worry about the sound makes the sound seem louder. Poor sleep quality reduces the brain's ability to habituate to tinnitus, making it feel more intrusive during waking hours. Fatigue, certain food additives, and changes in barometric pressure have also been reported as tinnitus triggers by patients. Identifying your personal triggers through a diary can help you and your audiologist develop targeted coping strategies.
Risk Factors That Increase Likelihood
Several factors increase the probability of developing tinnitus. Age is a significant risk factor, with incidence rising sharply after 50. Occupational and recreational noise exposure compounds risk over time. Smokers have a higher incidence of tinnitus than non-smokers, likely due to reduced blood flow to the inner ear. Cardiovascular conditions including hypertension, atherosclerosis, and diabetes can compromise the blood supply to the cochlea. A family history of hearing loss or tinnitus suggests a genetic predisposition. People with existing hearing loss are far more likely to develop tinnitus than those with normal hearing, which is why routine tinnitus assessment and hearing checks are important for early detection.
When to Seek Professional Help
Most tinnitus is benign, but certain red flags require prompt evaluation. Seek professional help immediately if your tinnitus occurs in only one ear, as unilateral tinnitus can occasionally indicate an acoustic neuroma or other structural abnormality. Pulsatile tinnitus, a rhythmic beating or whooshing sound that pulses in time with your heartbeat, can signal a vascular issue that needs investigation. Sudden onset of tinnitus accompanied by hearing loss, vertigo, or facial weakness should be treated as urgent. Tinnitus that persists for more than one week, disrupts your sleep, or causes significant anxiety or depression also warrants professional assessment. A qualified audiologist at our Melbourne clinic can perform a comprehensive evaluation and determine the most appropriate next steps.
Understanding what causes tinnitus puts you in a stronger position to manage it effectively. Whether the underlying cause is noise damage, age-related hearing loss, a medical condition, or a medication side effect, a professional diagnosis is the foundation of any successful treatment plan. SoundClear's audiologists provide thorough tinnitus assessments and personalised management strategies for patients across Melbourne. If tinnitus is affecting your quality of life, book an appointment to get the answers and support you need.
Frequently Asked Questions
Can tinnitus go away on its own?
Yes, in some cases tinnitus can resolve without treatment, particularly when it is caused by a temporary condition such as an ear infection, a brief exposure to loud noise, or impacted earwax. However, tinnitus that persists for more than one week, occurs in only one ear, or is accompanied by hearing loss or dizziness should be assessed by an audiologist or ENT specialist.
What medications cause tinnitus?
Several medications are known to cause or worsen tinnitus, including high doses of aspirin, certain antibiotics (such as gentamicin and tobramycin), loop diuretics, some chemotherapy drugs like cisplatin, and certain antidepressants. These are called ototoxic drugs because they can damage the inner ear. If you notice tinnitus after starting a new medication, speak with your prescribing doctor before making any changes.
Is tinnitus a sign of a serious condition?
In most cases tinnitus is not a sign of a dangerous condition. It is most commonly linked to noise-induced hearing damage or age-related hearing loss. However, tinnitus that occurs in only one ear, is pulsatile (beats in time with your heart), or is accompanied by balance problems, facial weakness, or sudden hearing loss should be evaluated promptly, as it can occasionally indicate conditions such as an acoustic neuroma or vascular abnormality.
How is tinnitus diagnosed?
Tinnitus is diagnosed through a combination of a hearing assessment, medical history review, and physical examination of the ears. A comprehensive tinnitus assessment includes pure-tone audiometry, speech testing, and tympanometry. In some cases, imaging such as an MRI may be recommended to rule out structural causes. An audiologist will also evaluate the pitch, loudness, and masking characteristics of your tinnitus.
Works Cited
Hearing Australia. "Tinnitus: Causes, Symptoms and Treatment." Australian Government, 2024, hearing.com.au.
Australian Institute of Health and Welfare. "Ear and Hearing Health." AIHW, Australian Government, 2024, aihw.gov.au/reports/australias-health/hearing-health.
Nondahl, D. M., et al. "The Prevalence of Tinnitus and Its Impact on Quality of Life in the Elderly." Age and Ageing, vol. 40, no. 3, 2011, pp. 345-349.
Hoge, C. W., et al. "Tinnitus and Traumatic Brain Injury." JAMA Otolaryngology: Head and Neck Surgery, vol. 144, no. 9, 2018, pp. 801-807.
Baguley, D., et al. Tinnitus: A Multidisciplinary Approach. 2nd ed., Wiley-Blackwell, 2013.