Tinnitus is the perception of sound when no external sound is present. It most commonly shows up as ringing, but people also describe buzzing, hissing, clicking, or whooshing. About 14.4% of adults worldwide experience some form of tinnitus, and roughly 1 in 10 adults live with a chronic version that persists for months or longer. It is not a disease itself but a symptom of changes somewhere in the auditory system.
What Tinnitus Sounds Like
The phantom sound varies widely from person to person. Some hear a high-pitched ringing or whine, others a low hum or roar. It can be steady or pulsing, faint or loud enough to interfere with concentration and sleep. For most people the sound is constant but fluctuates in how noticeable it feels, often becoming more prominent in quiet environments like a bedroom at night.
There are two broad categories. Subjective tinnitus, by far the more common type, is audible only to the person experiencing it. Objective tinnitus is rare and can actually be heard by a clinician examining the ear. Objective tinnitus usually comes from a physical source: blood flowing through a narrowed vessel near the ear, or involuntary muscle contractions in the middle ear or palate.
What Happens in the Brain
Tinnitus starts with damage or changes in the inner ear (the cochlea), but the sound you hear is generated deeper in the brain. When the cochlea sends fewer signals than it used to, the central auditory system compensates by turning up its own activity, like cranking the volume on a radio to make up for a weak signal. This creates abnormal firing patterns in the brain’s sound-processing centers: neurons fire more frequently, more synchronously, and in irregular bursts.
At the same time, the brain’s normal ability to suppress irrelevant neural noise breaks down. Inhibitory signals that would ordinarily quiet this excess activity become weaker, allowing the hyperactivity to persist. The brain essentially interprets this self-generated electrical activity as real sound.
The auditory system doesn’t work alone here. Brain regions involved in attention and emotional salience, including areas that evaluate whether something is important or threatening, also play a role. This helps explain why tinnitus is more distressing for some people than others. When the brain’s threat-detection network latches onto the phantom sound, it becomes harder to ignore. Structures involved in emotion and reward normally help filter out the signal, but when that filtering fails, tinnitus becomes a persistent, intrusive presence.
Common Causes and Triggers
Noise exposure is the single most common trigger. Prolonged exposure above 85 decibels (roughly the volume of heavy city traffic or a loud restaurant) damages the delicate hair cells in the cochlea. This damage is cumulative and irreversible. A single concert or blast exposure can also cause it. The National Institute for Occupational Safety and Health recommends limiting exposure to 85 decibels to an eight-hour window, with the safe duration cut roughly in half for every 3-decibel increase beyond that.
Age-related hearing loss is the other major driver. As hearing declines naturally with age, the same central gain mechanism kicks in, and tinnitus often develops alongside it. Many people with tinnitus don’t realize they have hearing loss because it happens gradually.
Beyond noise and aging, a surprisingly long list of medications can cause or worsen tinnitus. Common over-the-counter pain relievers like aspirin, ibuprofen, and naproxen are known triggers, especially at higher doses. Certain antibiotics, loop diuretics (often prescribed for heart failure or high blood pressure), some antidepressants, and platinum-based chemotherapy drugs are also associated with tinnitus as a side effect. In many cases the tinnitus resolves when the medication is stopped, but not always.
Other causes include earwax blockage, middle ear infections, jaw joint disorders, head or neck injuries, and conditions like Meniere’s disease that affect the inner ear’s fluid balance.
Pulsatile Tinnitus Is Different
If your tinnitus throbs in rhythm with your heartbeat, that is pulsatile tinnitus, and it deserves separate attention. Unlike the more common ringing type, pulsatile tinnitus often has a detectable physical cause, usually related to blood flow.
In older adults, the most frequent culprit is atherosclerotic plaque narrowing blood vessels near the ear, which creates turbulence the ear picks up as a whooshing pulse. In younger people, a condition called fibromuscular dysplasia (a non-plaque narrowing of arteries) or a tear in a vessel wall can produce the same effect. Abnormal connections between arteries and veins near the skull base, as well as blood-vessel-rich tumors called paragangliomas, are less common but important causes.
Raised pressure inside the skull can also produce pulsatile tinnitus. A condition called idiopathic intracranial hypertension, which most often affects younger women who are overweight, causes pulsatile tinnitus in about 65% of cases. Because some of these underlying causes are serious, pulsatile tinnitus that is new, one-sided, or accompanied by headaches or vision changes typically warrants imaging to look for a structural cause.
How Tinnitus Is Assessed
There is no single test that confirms tinnitus, since it is a subjective experience for most people. An evaluation typically starts with a hearing test to check for underlying hearing loss at different frequencies. Audiologists may also do pitch matching (identifying the frequency that most closely resembles your tinnitus) and loudness matching (gauging how loud the tinnitus actually is in decibel terms). Many people are surprised to learn their tinnitus measures only a few decibels above their hearing threshold, even when it feels overwhelming.
Questionnaires that measure how much tinnitus affects sleep, concentration, mood, and daily functioning are a standard part of the assessment. These scores help track whether treatments are working over time. If there is a suspicion of pulsatile or objective tinnitus, imaging studies of the blood vessels and skull base may follow.
Managing Tinnitus
There is currently no cure that eliminates the perception of tinnitus entirely. But several approaches can significantly reduce how much it bothers you, and for many people the condition becomes far less intrusive with the right strategy.
Sound Therapy
Because tinnitus is most noticeable in silence, adding background sound can reduce its prominence. This ranges from simple solutions (a fan, white noise machine, or nature sounds at night) to clinical-grade ear-level devices that deliver a steady low-level noise throughout the day. If you also have hearing loss, hearing aids alone often help by restoring the environmental sounds your brain has been missing, which reduces the neural overcompensation that drives tinnitus.
Tinnitus Retraining Therapy
Tinnitus Retraining Therapy (TRT) combines structured counseling with ongoing sound therapy. The goal is habituation: training your brain to reclassify the tinnitus signal as unimportant background noise, similar to how you stop noticing the hum of a refrigerator. Initial improvements typically appear around three months in, with more substantial changes at six months. Full habituation generally takes 12 to 18 months. Studies from multiple treatment centers report noticeable improvement in 74% to 84% of patients who undergo TRT.
Cognitive Behavioral Therapy
Cognitive behavioral therapy (CBT) takes a different angle. It does not change the sound itself but targets the emotional and psychological reaction to it. CBT helps you identify and reframe the negative thought patterns tinnitus can trigger (“This will never stop,” “I’ll never sleep normally again”) and replace them with more realistic, less distressing ones. The result is that the same sound produces less anxiety, less frustration, and less interference with daily life. CBT has the strongest evidence base of any psychological treatment for tinnitus and is effective whether delivered in person or through guided online programs.
Bimodal Neuromodulation
A newer option pairs sound stimulation through headphones with mild electrical stimulation of the tongue. The idea is to retrain the brain’s auditory processing by delivering two types of sensory input simultaneously. One FDA-cleared device, Lenire, showed that about 82% of patients with moderate or worse tinnitus achieved a clinically meaningful reduction in symptoms after 12 weeks of daily use. Real-world data from audiology clinics have been consistent with these trial results, though individual responses vary.
How Tinnitus Affects Daily Life
For roughly half of people who experience tinnitus, it is a mild background presence that does not significantly disrupt their routine. For the other half, it ranges from annoying to debilitating. Sleep disruption is the most common complaint: the quiet of a bedroom makes tinnitus louder by comparison, and poor sleep cascades into daytime fatigue, difficulty concentrating, and irritability.
Tinnitus and mental health are closely linked. Anxiety and depression are more common in people with bothersome tinnitus, and stress in turn makes tinnitus feel louder and more intrusive, creating a feedback loop. This is not imagined. The brain regions that assign emotional weight to sensory experiences are physically involved in sustaining the tinnitus signal, so emotional state genuinely modulates how loud and disruptive it feels.
Reducing Your Risk
The most effective prevention is protecting your hearing. Wearing earplugs or noise-canceling headphones in loud environments (concerts, power tools, motorcycles, loud workplaces) makes a meaningful difference. Keeping personal headphone volume below 60% of maximum during extended listening is a practical rule. If you take medications known to affect hearing, particularly high-dose pain relievers or the drug classes listed above, staying aware of early symptoms like a new ringing or fullness in the ears allows you to flag the issue before damage accumulates.