Ear ringing, known as tinnitus, happens when your brain generates a sound that isn’t coming from the outside world. About 27 million people in the United States experience it, roughly 11% of the adult population. The causes range from temporary and fixable (like earwax buildup) to chronic and complex (like inner ear damage from loud noise or aging).
What Happens Inside Your Ear
Your inner ear contains thousands of tiny hair cells that convert sound waves into electrical signals for your brain. When these cells are damaged or lost, the signals they send become disorganized. Your brain, expecting a steady stream of input from the ear, compensates for the reduced signal by turning up its own sensitivity. That amplified neural activity is what you perceive as ringing, buzzing, hissing, or humming.
Even minor hair cell loss that doesn’t show up on a standard hearing test can be enough to trigger tinnitus. The damaged cells send mismatched signals to the brain, disrupting the normal processing of sound. Over time, the brain essentially rewires itself around the gap in input, and that reorganization can make the phantom sound persistent. This is why many people with tinnitus have some degree of hearing loss, even if they haven’t noticed it yet.
Loud Noise Exposure
Noise damage is one of the most common causes of tinnitus. Sounds at or below 70 decibels, about the level of a washing machine, are safe even with prolonged exposure. But repeated or extended exposure at 85 decibels or above (think heavy traffic, a loud restaurant, or a power tool) can permanently damage those inner ear hair cells. The louder the sound, the less time it takes to cause harm. A single concert or a few hours of loud headphone use can leave your ears ringing for hours or days. In most cases that temporary ringing fades, but repeated exposure causes cumulative damage that eventually becomes permanent.
Occupational noise is a major contributor. Construction workers, musicians, military personnel, and factory employees face chronic exposure that wears down hair cells over years. Even recreational noise, like shooting firearms, riding motorcycles, or attending sporting events, adds up over a lifetime.
Age-Related Hearing Loss
As you get older, the sensory hair cells in your inner ear gradually deteriorate. This process starts in the part of the ear responsible for detecting high-frequency sounds and slowly progresses toward the areas that handle lower frequencies. The decline typically becomes noticeable after middle age and gets worse with each passing decade. As more hair cells are lost, the brain receives less auditory input, and that deficit often produces tinnitus. This is why ringing in the ears becomes increasingly common in people over 60.
Medications That Affect Your Ears
Certain drugs are toxic to the delicate structures of the inner ear. The risk depends heavily on the dose: some medications only cause problems at very high levels that most people never receive, while others carry risk at standard doses. The most commonly implicated categories include:
- Aspirin and related pain relievers: High doses of aspirin are a well-known trigger. The ringing typically subsides after you stop taking it or reduce the dose.
- Certain antibiotics: A class of antibiotics used for serious bacterial infections (aminoglycosides) is among the most recognized ear-toxic drugs. These are usually given in hospital settings for severe infections.
- Chemotherapy drugs: Some cancer treatments, particularly platinum-based agents, can damage inner ear cells as a side effect.
- Water pills (loop diuretics): These medications, prescribed to reduce fluid retention, can affect the ear’s chemical balance, especially at higher doses.
In many cases, medication-related tinnitus improves after the drug is discontinued, but with certain antibiotics and chemotherapy agents, the damage can be permanent.
Jaw Problems and Muscle Tension
Your jaw joint sits remarkably close to your inner ear, and the two share muscles, ligaments, and nerve pathways. When the jaw joint is inflamed, misaligned, or strained from clenching and grinding, that irritation can directly alter how you perceive sound. People with jaw disorders frequently report ear ringing alongside jaw pain, clicking, or difficulty chewing. Treating the jaw problem, through a mouth guard, physical therapy, or stress reduction, often reduces or eliminates the tinnitus.
Earwax Buildup and Other Blockages
Sometimes the cause is surprisingly simple. A buildup of earwax can press against the eardrum or block the ear canal, creating pressure changes that produce ringing. Ear infections, fluid behind the eardrum, or congestion from allergies and colds can do the same thing. These are among the most treatable causes of tinnitus. Once the blockage is cleared or the infection resolves, the ringing typically goes away.
Pulsatile Tinnitus: When You Hear Your Heartbeat
If the sound in your ear has a rhythmic thumping or swooshing quality that seems to keep time with your pulse, that’s a distinct type called pulsatile tinnitus. Unlike regular tinnitus, which originates from nerve activity, pulsatile tinnitus is caused by actual blood flow that your ear is picking up. It’s essentially the sound of blood moving through vessels near your ear.
Several conditions can cause it:
- High blood pressure puts extra force on blood vessel walls, making blood flow noisier.
- Atherosclerosis (hardened or narrowed arteries) creates turbulent, uneven blood flow near the ear.
- Anemia forces the heart to pump harder, increasing blood flow volume and the noise it generates.
- An overactive thyroid speeds up the heart and boosts blood flow throughout the body.
- Increased pressure around the brain from excess cerebrospinal fluid can press on blood vessels near the ear.
Pulsatile tinnitus is more likely to have an identifiable, treatable cause than regular tinnitus, so it’s worth getting checked out.
When Ringing Points to Something Serious
Most tinnitus is benign, but certain patterns deserve attention. Ringing in only one ear, especially when paired with gradual hearing loss on that same side, dizziness, or facial numbness, can signal a growth on the nerve that connects the ear to the brain (called an acoustic neuroma). About 9 out of 10 people with this type of tumor experience one-sided hearing loss. These growths are almost always noncancerous and slow-growing, but they do require monitoring and sometimes treatment.
Ménière’s disease is another condition that causes episodes of ringing alongside sudden hearing loss, a feeling of fullness in the ear, and intense vertigo that can last minutes to hours. The episodes come and go unpredictably, and hearing loss can worsen over time.
Temporary vs. Lasting Tinnitus
Not all ear ringing sticks around. Tinnitus from a loud concert, a stressful week, a head cold, or a medication you’ve recently started will often fade on its own once the trigger passes. If the cause is something correctable, like earwax impaction, a jaw problem, or high blood pressure, treating that underlying issue can resolve the ringing entirely.
Tinnitus becomes chronic when it’s driven by permanent changes, most commonly irreversible hair cell loss from noise exposure or aging. In those cases, the ringing doesn’t go away, but it often becomes less noticeable over time as the brain learns to deprioritize the signal. Sound therapy, hearing aids (which restore some of the missing input the brain is compensating for), and cognitive behavioral approaches can all reduce how much chronic tinnitus disrupts daily life.