Ringing in your ears, known medically as tinnitus, is your brain generating a sound perception without any external source. About one in seven adults experiences it. The sound isn’t always ringing. It can be buzzing, hissing, clicking, or humming, and it can be constant or come and go. In most cases, it signals some degree of hearing damage, but it can also point to other treatable conditions.
Why Your Brain Creates Phantom Sounds
Your inner ear contains thousands of tiny hair cells that convert sound waves into electrical signals for the brain. When these hair cells are damaged, whether from loud noise, aging, or injury, they stop sending their normal signals. Your brain responds by turning up its own volume. Neurons in the auditory system start firing spontaneously at rates roughly double their normal baseline, and they begin firing in sync with each other, particularly in the frequency range where hearing has been lost. This increased, coordinated neural activity is what you perceive as ringing or buzzing.
The process runs deeper than just the inner ear. When the brain loses input from damaged hair cells, neurons in the hearing centers reorganize. Cortical neurons that used to respond to the lost frequencies start responding instead to neighboring frequencies, creating an overrepresentation of certain tones. At the same time, the brain’s normal inhibitory signals, which keep neural activity in check, weaken. The result is a kind of feedback loop: less input from the ear leads to more spontaneous activity in the brain, which you hear as a persistent phantom sound.
The Most Common Causes
About 90% of people with tinnitus also have some degree of hearing loss. That makes noise exposure and age-related hearing decline the two leading triggers. The hair cells in your inner ear are delicate structures that don’t regenerate once broken, so cumulative damage from concerts, power tools, earbuds at high volume, or years of occupational noise adds up over time.
Beyond hearing loss, several other conditions can cause or worsen ringing in the ears:
- Ear infections or blockages. Wax buildup, fluid, or infection can change pressure in the ear canal and trigger tinnitus that resolves once the blockage clears.
- Jaw disorders. Problems with the joint where your jawbone meets your skull (the TMJ) can produce tinnitus because of shared nerve pathways with the ear.
- Inner ear muscle spasms. Muscles inside the ear can tense involuntarily, causing tinnitus along with a feeling of fullness. This sometimes occurs with neurologic conditions like multiple sclerosis.
- Abnormal bone growth. A hereditary condition called otosclerosis causes bone in the middle ear to grow abnormally, interfering with sound transmission.
- Tumors. An acoustic neuroma, a benign growth on the nerve connecting the ear to the brain, is a less common but important cause, particularly when ringing occurs in only one ear.
Medications That Can Trigger It
Certain drugs are toxic to the inner ear, a property called ototoxicity. High-dose aspirin is one of the most well-known culprits. Loop diuretics used for heart failure and kidney disease, some chemotherapy drugs, and macrolide antibiotics prescribed at high doses or for extended periods can all cause or worsen tinnitus. Newer biologic drugs, increasingly used for conditions from melanoma to thyroid eye disease, are also emerging as a concern.
Combining two or more of these medications amplifies the risk significantly. If you notice new ringing after starting a medication, that connection is worth raising with your prescriber, since the effect is sometimes reversible when the drug is stopped or the dose adjusted.
Pulsatile Tinnitus Is Different
If the sound you hear pulses in rhythm with your heartbeat, that’s a distinct type called pulsatile tinnitus. Unlike the more common form, pulsatile tinnitus usually has an identifiable physical cause related to blood flow near the ear. High blood pressure, anemia, an overactive thyroid, and atherosclerosis (plaque buildup in arteries) can all make blood flow noisier as it passes through vessels near the ear. Less commonly, it stems from tangles of blood vessels near the ear, abnormalities in the brain’s venous drainage channels, or increased pressure from cerebrospinal fluid buildup around the brain.
Pulsatile tinnitus is more likely to have a treatable underlying cause than standard tinnitus. It also warrants a prompt medical evaluation because, in rare cases, sudden onset pulsatile tinnitus can indicate a serious vascular or intracranial problem.
When Ringing Is a Red Flag
Most tinnitus is not dangerous, but certain patterns signal something that needs urgent attention. Sudden hearing loss in one ear, especially with new ringing on that side, is considered an ear emergency. Treatment within the first few days dramatically improves the chance of recovering hearing, so same-day evaluation matters.
Ringing in only one ear deserves investigation even without sudden hearing loss, since it can be an early sign of an acoustic neuroma or Meniere’s disease. Any tinnitus accompanied by facial weakness, severe dizziness or vertigo, persistent ear pain, or ear discharge should be evaluated urgently. And if tinnitus is causing significant emotional distress, anxiety, or interfering with sleep to the point of affecting your mental health, that alone is reason enough to seek help.
How Tinnitus Is Evaluated
The first step is typically a hearing test (audiogram) to check for hearing loss across different frequencies. If tinnitus is present, audiologists can perform pitch matching, where you listen to a series of tones and identify which one most closely resembles the sound you hear. This helps characterize the tinnitus and can guide treatment. Frequencies tested typically range from very low (50 Hz) up to 16,000 Hz.
For pulsatile tinnitus or ringing in one ear only, imaging studies are often ordered to look at blood vessels and structures near the ear. The specific workup depends on the pattern of symptoms and what your provider suspects.
Managing the Sound
There is no universal cure for tinnitus, but several approaches can reduce how much it bothers you. Research comparing treatment strategies has found that the most effective approach combines sound-based therapy with educational counseling and, when appropriate, medication for related symptoms like anxiety or sleep disruption. Sound therapy alone helps, but it works better when paired with structured counseling that helps you understand and reframe your reaction to the sound.
Sound therapy works by giving your brain competing input. This can be as simple as a fan, white noise machine, or background music, or as targeted as hearing aids that amplify the frequencies you’ve lost (which reduces the brain’s tendency to fill the gap with phantom sound). Custom sound generators that play tones calibrated to your specific tinnitus frequency are another option.
Cognitive behavioral therapy has the strongest evidence for reducing tinnitus-related distress and improving quality of life. It doesn’t eliminate the sound itself, but it changes your brain’s emotional and attentional response to it. Over time, many people find the ringing fades into the background of their awareness, a process called habituation. For most people with chronic tinnitus, the goal isn’t silence but reaching a point where the sound no longer commands attention or disrupts daily life.
If your tinnitus has a specific treatable cause, such as earwax buildup, an ear infection, a medication side effect, or a vascular abnormality, addressing that cause can reduce or eliminate the ringing entirely.