Hearing sounds in your ear that don’t come from an outside source is extremely common, and the cause ranges from harmless to medically significant depending on the type of sound, whether it affects one or both ears, and how long it lasts. Most people experience some form of this at least once, and for many it becomes a recurring or constant presence. Understanding what kind of sound you’re hearing is the fastest way to narrow down what’s going on.
How Your Ear Creates Phantom Sounds
The most common explanation is tinnitus, a persistent ringing, buzzing, hissing, or whooshing that has no external source. It affects roughly 15 to 20 percent of people, and it becomes more common with age.
Deep inside your inner ear, thousands of tiny hair cells translate sound vibrations into electrical signals that travel to the brain. These cells act as a built-in amplifier, sharpening your ability to distinguish between different pitches. When they’re damaged, whether from loud noise, aging, or other factors, the signals they send become distorted or incomplete. Your brain notices the gap between what it expects to hear and what it actually receives, and it fills in the missing input with its own generated signal. That manufactured signal is what you perceive as ringing or buzzing.
This is why tinnitus so often accompanies hearing loss. The two share a root cause: damage to those hair cells. Once destroyed, these cells do not regenerate in humans, which is why noise-induced hearing loss and the tinnitus that comes with it are permanent. But tinnitus can also occur in people with completely normal hearing tests, suggesting that subtler damage to the nerve connections between hair cells and the brain can be enough to trigger it.
Ringing vs. Clicking vs. Pulsing
The character of the sound you hear points toward different causes. A steady tone, ringing, hissing, or buzzing that stays relatively constant is classic tinnitus. A clicking or popping sound, especially when you swallow or yawn, usually involves the eustachian tubes, which are small passages connecting your middle ears to the back of your throat. These tubes open and close to equalize air pressure and drain fluid. When they get clogged from allergies, a cold, or sinus congestion, you may hear clicking, feel fullness, or notice muffled hearing. This type of ear sound is almost always temporary and resolves when the congestion clears.
A rhythmic whooshing or thumping that keeps time with your heartbeat is called pulsatile tinnitus, and it works differently from the standard kind. Rather than a phantom signal generated by the brain, you’re actually hearing blood flowing through vessels near your ear. Several conditions can make that blood flow loud enough to hear:
- Anemia, which increases blood flow volume and makes it noisier
- High blood pressure, which puts extra force on vessel walls near the ear
- Atherosclerosis, where plaque buildup creates turbulent, uneven blood flow
- Abnormal blood vessel formations (arteriovenous malformations) near the ear
- Elevated pressure around the brain (idiopathic intracranial hypertension), which compresses nearby blood vessels
- Hyperthyroidism, which speeds up the heart and boosts circulation
Pulsatile tinnitus is worth investigating because it often has a treatable cause. Standard tinnitus rarely does.
Causes Beyond the Ear Itself
Your jaw joint sits remarkably close to your ear canal. Temporomandibular disorders, problems with the hinge that connects your jaw to your skull, can produce ringing, clicking, or a sense of fullness in the ear. If you also notice jaw pain, difficulty chewing, or a grinding sensation when you open your mouth, the ear sounds may be secondary to a jaw issue rather than an ear problem.
Earwax buildup is another surprisingly common culprit. When wax presses against the eardrum, it can muffle external sound and amplify internal noise, creating or worsening tinnitus. This is one of the simplest causes to fix.
Certain medications can also trigger ear sounds, particularly at high doses. Aspirin in large quantities, some antibiotics (especially when prescribed long-term at high doses), certain chemotherapy drugs, and loop diuretics used for heart failure or kidney disease are the most common offenders. Combining two of these medications raises the risk significantly. If tinnitus appeared after starting or increasing a medication, that connection is worth flagging with whoever prescribed it.
When the Sound Points to Something Serious
Most ear sounds are benign, but certain patterns deserve prompt attention. The key distinction is whether the sound affects one ear or both. Tinnitus in one ear only, especially when paired with hearing loss on that same side, raises suspicion for an acoustic neuroma, a noncancerous growth on the nerve connecting the ear to the brain. This combination of unilateral hearing loss and tinnitus is considered the hallmark of that condition.
Pulsatile tinnitus, because it suggests a vascular origin, also typically warrants investigation with imaging. And tinnitus that comes and goes in episodes, particularly with vertigo and fluctuating hearing loss, is the classic pattern of Ménière’s disease.
In general, tinnitus that is one-sided, pulsatile, or accompanied by other symptoms on the same side (hearing loss, dizziness, ear pain) is more likely to have a specific, identifiable cause than the bilateral, steady ringing most people experience.
What You Can Do About It
For standard tinnitus caused by hair cell damage, there is no cure that restores the cells. But that doesn’t mean nothing helps. The brain’s response to tinnitus is heavily influenced by attention and emotion. When tinnitus first appears, most people are hyperaware of it, which makes it seem louder. Over time, many people habituate naturally, meaning the brain learns to filter it out the same way it filters out the hum of a refrigerator.
Sound therapy speeds up this process. Playing low-level background noise, whether from a fan, a white noise machine, or a sound app, gives the brain competing input and reduces how prominently the tinnitus registers. Hearing aids help for the same reason: by amplifying the external sounds you’ve been missing, they reduce the contrast between the tinnitus and your environment. Cognitive behavioral therapy has the strongest evidence among psychological approaches, helping people change their emotional reaction to the sound so it becomes less distressing even when it’s still present.
For pulsatile tinnitus, treatment targets whatever is driving the abnormal blood flow. Correcting anemia, managing blood pressure, or addressing a vascular malformation can eliminate the sound entirely. For eustachian tube dysfunction, treating the underlying congestion or allergy usually resolves the clicking and fullness within days to weeks. Medication-related tinnitus often improves when the dose is reduced or the drug is switched, though this isn’t guaranteed, especially after prolonged use of chemotherapy agents.
Protecting your hearing going forward matters regardless of the cause. Noise exposure is cumulative, and every additional round of damage makes tinnitus louder and harder to ignore. Earplugs at concerts, keeping headphone volume below 60 percent, and limiting prolonged exposure to anything loud enough that you need to raise your voice to talk over it are the most practical steps you can take.