Tinnitus & Sound Sensitivity
Tinnitus rarely appears out of nowhere. It is a symptom, your body's way of signaling that something in your hearing system, or elsewhere in your body, needs attention. For some people the cause is obvious, like a loud concert; for others it is more complex and involves several factors at once.
Common underlying causes include hearing loss, noise exposure, earwax, ear infections, jaw or neck problems, circulatory changes, certain medications, and stress. Understanding why your tinnitus started, or what keeps it going, is the first step toward relief.
This page from our San Mateo and San Carlos audiologists walks through the most common causes and day-to-day triggers, plus the red flags that warrant prompt medical attention. For the basics, start with what tinnitus is.
At a glance
- Tinnitus is a symptom with many possible causes, and often more than one factor is involved.
- Hearing loss and noise exposure are the most common contributors, but medications, jaw problems, and circulation matter too.
- Even when no single cause is found, contributing factors are usually treatable and the impact can be reduced.
How tinnitus develops in the ear and brain
For many people tinnitus begins when the delicate hair cells inside the inner ear are damaged by aging, noise, illness, or injury. Once those cells are affected, the brain receives less input and may turn up its internal gain to compensate, creating phantom sound to fill in the missing information. This is why tinnitus is so often linked with hearing loss, and why treating hearing loss can be so effective.
Hearing loss and noise exposure
Repeated exposure to loud sound, from concerts, clubs, power tools, or headphones, can permanently damage inner-ear cells. Many people notice temporary ringing after loud events; over time those episodes can become chronic tinnitus. Age-related hearing loss also plays a major role, as the inner ear becomes less sensitive to high-pitched sounds and the brain fills in the gaps.
Earwax, infections, and middle-ear problems
Excess earwax can block the canal and press on the eardrum, causing tinnitus and muffled hearing, and this is usually very treatable. Fluid behind the eardrum, middle-ear infections, and eustachian-tube problems can all create fullness, muffled hearing, and temporary tinnitus that often clears once the underlying issue is treated.
Medical and neurological conditions
Tinnitus can accompany broader conditions affecting the ear, circulation, or nervous system, including Meniere's disease (which can cause roaring tinnitus and vertigo), hyperacusis, jaw and neck problems (TMJ, muscle tension, poor desk posture), and cardiovascular changes. When ringing beats in time with your heartbeat, it is called pulsatile tinnitus and can involve high blood pressure, narrowed vessels, diabetes, or structural variations near the ear.
Medications that contribute
Certain drugs are ototoxic, meaning they can affect the inner ear or hearing nerve and lead to tinnitus, hearing loss, or both. Examples include very high doses of aspirin or other salicylates, certain antibiotics (especially aminoglycosides), some chemotherapy agents, and some diuretics and heart medications. Never stop a prescribed medication on your own; instead ask your physician whether a different drug or dose is appropriate.
Lifestyle triggers that make it worse
Even when the underlying cause is stable, everyday triggers can turn the volume up. Many people report flares with stress, poor or fragmented sleep, excess caffeine or alcohol, high salt intake (especially with Meniere's), and loud environments like crowded restaurants or concerts. Working on these areas can reduce flare-ups and help your brain adapt.
Can tinnitus be prevented or reduced?
Not every cause is preventable, but you can lower your risk: use ear protection at concerts, events, and when using power tools; follow 60/60 headphone guidelines (60% volume, 60 minutes max); rest your ears after loud exposure; manage blood pressure, diabetes, and cardiovascular risk; keep good sleep habits; and limit nicotine, excess caffeine, and heavy alcohol use.
Frequently asked questions
A few questions worth asking
What is the most common cause of tinnitus?
Hearing loss, particularly from noise exposure and aging, is the most common contributor. When the ear sends less sound to the brain, the brain often generates phantom ringing to fill the gap, which is why treating hearing loss frequently helps.
Which causes of tinnitus are red flags?
Seek prompt evaluation if tinnitus appears suddenly, is only in one ear, is clearly pulsatile, or occurs with sudden hearing loss, severe dizziness, facial weakness, or an intense headache. See our guide on when to see a doctor.
Can stress and lifestyle really cause tinnitus?
Stress, poor sleep, caffeine, and alcohol rarely cause tinnitus outright, but they are powerful amplifiers that make an existing sound louder and more noticeable. Managing them is an important part of any tinnitus care plan.