Ear ringing, known medically as tinnitus, is almost always caused by some degree of hearing loss. About 90% of people with tinnitus have measurable hearing loss, even if they haven’t noticed it yet. The sound you hear, whether it’s ringing, buzzing, hissing, or whooshing, isn’t coming from outside your body. It’s generated by your nervous system, typically in response to damage or changes in the structures that process sound.
The causes range from everyday noise exposure and earwax buildup to medications, blood vessel problems, and jaw disorders. Understanding which type of cause is behind your tinnitus matters because some are easily fixable, some need monitoring, and a few are medical emergencies.
How Damaged Hearing Creates Phantom Sound
Your inner ear contains thousands of tiny hair cells that vibrate in response to sound waves. Each group of hair cells responds to a specific frequency. When sound waves hit them, they convert that vibration into electrical signals your brain interprets as sound. When these hair cells are damaged or destroyed, something goes wrong with this signaling chain.
Damaged hair cells can become spontaneously active, firing electrical signals even when no actual sound is present. Your brain receives these signals through the auditory nerve and interprets them as real sound, producing the ringing or buzzing you hear. The pitch of tinnitus often corresponds to the frequency range where your hair cells are most damaged. This is why someone with high-frequency hearing loss typically hears a high-pitched ringing.
This type of tinnitus, where only you can hear the sound, accounts for the vast majority of cases. It’s called subjective tinnitus, and it’s by far the most common form.
The Most Common Causes
Age-Related Hearing Loss
Gradual hearing loss that comes with aging is the single most common driver of tinnitus. As hair cells deteriorate over decades, the brain loses input at certain frequencies and begins generating its own signals to fill the gap. Many people first notice tinnitus in their 50s or 60s, often before they realize their hearing has declined. Among people with severe to profound hearing loss, an estimated 80% experience tinnitus.
Noise Exposure
Loud noise is the other major cause, and it doesn’t require years of exposure. A single loud event, like an explosion or a concert without ear protection, can damage hair cells permanently. The CDC’s recommended safe limit is 85 decibels averaged over an eight-hour day. For every 3-decibel increase above that, the safe exposure time cuts in half. At 88 decibels, you have four hours. At 91, just two. A rock concert can easily hit 110 decibels or more, meaning damage can occur within minutes. If your ears ring after leaving a loud environment, that’s a sign the noise was already causing harm.
Earwax Blockage
A buildup of earwax can change the pressure inside your ear canal and muffle incoming sound, which can trigger or worsen tinnitus. This is one of the most easily resolved causes. Once the blockage is removed, the ringing often stops.
Medications
Several drug classes can damage hearing or trigger tinnitus, particularly at high doses. These include high-dose aspirin, certain antibiotics (especially macrolides like azithromycin when taken long-term at high doses), loop diuretics used for heart failure and kidney disease, and certain chemotherapy drugs. Combining two of these medications increases the risk substantially. Taking a chemotherapy drug alongside a loop diuretic, for example, can cause far greater hearing damage than either drug alone. Most of these situations involve high doses given during hospitalization, but even over-the-counter painkillers like aspirin can cause tinnitus if you take enough of them.
Jaw, Head, and Neck Problems
Your jaw joint sits directly in front of your ear canal, and the two structures share muscles, ligaments, and nerve pathways. When the jaw joint is inflamed, misaligned, or dysfunctional, that irritation can alter how your brain processes sound, producing tinnitus. A clue that your jaw is involved: the ringing changes when you chew, clench your teeth, or yawn. You might also notice ear pain, jaw clicking, or muffled hearing alongside the tinnitus.
Head and neck injuries can also trigger tinnitus by affecting the inner ear, the auditory nerve, or the brain regions responsible for processing sound. Trauma-related tinnitus sometimes appears alongside other neurological symptoms and tends to be more variable in pitch and volume than noise-induced tinnitus.
Pulsatile Tinnitus: A Different Category
If the sound in your ear pulses in rhythm with your heartbeat, you likely have pulsatile tinnitus. Unlike the more common subjective type, this is caused by actual physical sound, usually turbulent blood flow near the ear that’s loud enough for your inner ear to pick up. In rare cases, a doctor can hear it too using a stethoscope.
The causes include narrowing of the carotid artery (the major blood vessel running through your neck), abnormal connections between arteries and veins near the skull, and increased pressure inside the skull from a condition called idiopathic intracranial hypertension. Some of these carry a risk of stroke in addition to causing the tinnitus.
Pulsatile tinnitus always warrants medical evaluation because it can point to vascular problems that need treatment for reasons well beyond the annoying sound.
Less Common Causes
Meniere’s disease, an inner ear disorder linked to abnormal fluid pressure, often produces tinnitus along with episodes of vertigo and fluctuating hearing loss. Tinnitus can be one of its earliest signs.
Acoustic neuroma, a benign tumor on the nerve connecting the inner ear to the brain, is another possibility. It typically causes tinnitus in only one ear, which is an important distinguishing feature since most tinnitus is bilateral.
Muscle spasms in the inner ear can cause tinnitus accompanied by a feeling of fullness. Eustachian tube dysfunction, where the tube connecting your middle ear to your throat doesn’t open and close properly, can produce similar symptoms by disrupting pressure balance.
When Ear Ringing Needs Urgent Attention
Most tinnitus develops gradually and, while frustrating, isn’t dangerous. But certain patterns signal something more serious:
- One-sided tinnitus. Ringing in only one ear is a red flag. It’s a common presenting sign of acoustic neuroma and Meniere’s disease.
- Sudden hearing loss with new tinnitus. This combination is considered an ear emergency that requires same-day evaluation. Early treatment can sometimes restore hearing that would otherwise be permanently lost.
- Pulsatile tinnitus. A rhythmic, heartbeat-synced sound suggests a vascular cause that may need imaging to rule out conditions affecting blood vessels in or near the brain.
- Tinnitus with dizziness or vertigo. This combination points to inner ear or neurological involvement that needs investigation.
- Tinnitus with facial weakness or numbness. Facial nerve symptoms alongside ear ringing can indicate a serious intracranial condition and should be treated as an emergency.
Gradual, bilateral tinnitus that started after years of noise exposure or alongside age-related hearing loss is the most common scenario and the least likely to indicate a dangerous underlying problem. But new, sudden, or one-sided tinnitus tells a different story and deserves prompt evaluation.