Ear ringing, known medically as tinnitus, most commonly results from damage to the tiny sensory cells inside your inner ear. About 21% of people experience it at some point, and while it’s often temporary, roughly 11% of those affected deal with it a lot of the time or constantly. The causes range from something as simple as a plug of earwax to something as complex as changes in how your brain processes sound.
How Inner Ear Damage Creates Phantom Sound
Your inner ear contains thousands of microscopic hair cells that convert sound waves into electrical signals for your brain. When these cells are damaged, whether by loud noise, aging, or infection, they stop sending normal signals. Your brain, no longer receiving the input it expects, compensates by ramping up its own activity. Neurons in the hearing centers of the brain begin firing spontaneously and synchronizing with each other in abnormal patterns. The result is a sound you perceive, a ringing, buzzing, or hissing, that has no external source.
This is why hearing loss on an audiogram is the single strongest predictor of tinnitus. The phantom sound is essentially your brain’s response to missing input, a form of neural adaptation gone wrong. Animal studies show these changes start in the first relay station of the auditory nerve and extend all the way up to the hearing cortex and beyond.
Noise Exposure and Age-Related Hearing Loss
Noise-induced hearing loss is considered the most common cause of tinnitus. Prolonged exposure to loud environments, whether from concerts, power tools, earbuds at high volume, or occupational noise, gradually destroys inner ear hair cells. These cells do not regenerate in humans. The damage accumulates over years, which is why many people first notice ringing in their 40s or 50s even if the noise exposure happened decades earlier.
Age-related hearing loss works through a similar mechanism. As you get older, hair cells naturally deteriorate, particularly the ones responsible for high-frequency sounds. This is why tinnitus often presents as a high-pitched ringing. Several factors accelerate this process: smoking, diabetes, low physical activity levels, and genetic predisposition all increase the risk of both hearing loss and tinnitus.
Earwax and Physical Blockages
Sometimes the cause is far simpler than nerve damage. Impacted earwax that blocks the ear canal can produce tinnitus along with a feeling of fullness and muffled hearing. The blockage changes how sound reaches your eardrum, and your brain may interpret the altered input as ringing. The good news: symptoms typically resolve completely once the wax is cleared. Foreign objects lodged in the ear canal can cause the same effect.
Medical Conditions That Trigger Ringing
A number of underlying health conditions cause tinnitus as a symptom rather than a standalone problem.
Ménière’s disease is an inner ear disorder that causes episodes of vertigo, hearing loss, and tinnitus. It affects roughly 615,000 people in the U.S. and produces sporadic ringing that can range from mild to severe, often fluctuating with vertigo attacks.
TMJ disorders are another surprisingly common trigger. The temporomandibular joint sits right next to the ear canal, and dysfunction in the jaw joint or surrounding muscles can produce or worsen ringing. Dental problems can have the same effect.
Ear infections (otitis media) cause inflammation and fluid buildup that disrupt normal sound conduction, often triggering temporary tinnitus. Ringing from infections usually fades as the infection clears, though severe or repeated infections can cause lasting damage.
Otosclerosis, a condition where abnormal bone growth in the middle ear stiffens one of the tiny bones needed for hearing, frequently produces tinnitus alongside progressive hearing loss.
Acoustic neuroma is a benign tumor on the nerve connecting the inner ear to the brain. It typically causes tinnitus in only one ear, which is a pattern that warrants medical evaluation. Other neurologic causes include head injury, whiplash, and multiple sclerosis.
Pulsatile Tinnitus: When You Hear Your Heartbeat
Pulsatile tinnitus is a distinct type where the sound throbs in sync with your pulse. Unlike the more common form, this variety has a real, physical sound source: blood flowing through vessels near your ear. It happens for one of two reasons. Either blood flow speeds up, or something disrupts the normal smooth flow pattern and creates turbulence that becomes audible.
In older adults, the most common cause is narrowing of the arteries in the head and neck from plaque buildup. In younger people, a condition called fibromuscular dysplasia, where artery walls develop abnormally, is more typical. Aneurysms in the carotid or vertebral arteries can also generate turbulent flow loud enough to hear.
Increased pressure inside the skull is another important cause. Pulsatile tinnitus occurs in about 65% of people with idiopathic intracranial hypertension, a condition more common in younger women. Blood vessel-rich tumors at the skull base, called paragangliomas, are a rarer but notable cause. Because pulsatile tinnitus often points to a specific, treatable vascular problem, it’s the type most likely to benefit from imaging and further workup.
Medications That Cause Ear Ringing
A long list of common medications can trigger tinnitus as a side effect. The ringing is often dose-dependent, meaning it worsens at higher doses and may improve when the dose is reduced or the medication is stopped.
The most familiar culprit is aspirin, particularly at higher doses used for pain or inflammation. Other over-the-counter pain relievers like ibuprofen, naproxen, and diclofenac carry the same risk. Among prescription medications, certain antibiotics are well-known triggers, especially a class used for serious infections (aminoglycosides like tobramycin and amikacin) and some commonly prescribed ones like azithromycin and ciprofloxacin.
Heart and blood pressure medications can also be responsible. Loop diuretics (water pills often prescribed for heart failure), beta blockers, ACE inhibitors, and calcium channel blockers all list tinnitus as a possible side effect. Chemotherapy drugs, particularly platinum-based agents, frequently cause both hearing loss and ringing. Even some antidepressants and anti-seizure medications carry this risk. If you notice ringing that started after beginning a new medication, that timing is worth noting.
Diet, Lifestyle, and Risk Factors
The relationship between diet and tinnitus is more nuanced than many people expect. Higher fat intake is associated with increased risk, while a high-protein diet appears mildly protective. Adequate vitamin B12 also seems to reduce the odds. Calcium and iron intake, interestingly, are associated with higher tinnitus risk, though the reasons aren’t fully understood.
Caffeine gets a bad reputation when it comes to ear ringing, but the evidence actually leans the other direction. Studies have found that higher caffeine intake is associated with lower risk of tinnitus, and caffeinated coffee specifically was linked to reduced odds of persistent ringing. This doesn’t mean coffee treats tinnitus, but cutting caffeine in hopes of silencing the ringing may not help.
Smoking and diabetes both accelerate hearing loss and, by extension, tinnitus risk. Regular exercise appears protective. Stress and sleep deprivation don’t cause tinnitus directly, but they reliably make existing ringing louder and harder to ignore, creating a cycle where tinnitus disrupts sleep and poor sleep amplifies the perception of tinnitus.
One Ear vs. Both Ears
Tinnitus in both ears typically points to a systemic cause: noise exposure, aging, medications, or a metabolic condition. Tinnitus isolated to one ear deserves closer attention. Clinical guidelines recommend a comprehensive hearing test for anyone with unilateral tinnitus, persistent ringing lasting six months or more, or ringing accompanied by noticeable hearing difficulty. One-sided ringing can signal an acoustic neuroma or another structural problem that benefits from early detection. Imaging of the head and neck is generally not needed for bilateral, nonpulsatile tinnitus without other neurological symptoms, but pulsatile or one-sided patterns often do warrant it.