Can Covid Affect Hearing? | Ringing, Muffled Sound, Red Flags

Yes—COVID can be linked with hearing changes like ringing or muffled sound, but other causes are common, so new or sudden changes deserve prompt care.

Most people think of COVID as a cough-and-fever illness. Then a weird ear symptom shows up: ringing that wasn’t there last week, one ear that feels “underwater,” or voices that suddenly sound far away. It’s distracting. It can be scary.

Here’s the straight story. Some people do report hearing and balance changes during COVID or after recovery. At the same time, lots of everyday problems can land on the same symptoms—congestion, wax, sinus trouble, noise exposure, and medication side effects. The goal is simple: take the symptom seriously, then sort the cause with smart triage.

How Hearing Changes Can Show Up During Or After COVID

When someone says “COVID affected my hearing,” they rarely mean one neat symptom. Ear and hearing complaints tend to cluster. Some are hearing itself, some are pressure in the middle ear, and some are balance-related.

These are the patterns people describe most often:

• Ringing or buzzing (tinnitus): A steady tone, hiss, or pulsing sound that’s more obvious at night.
• Muffled hearing: Speech sounds dull, like the “treble” got turned down.
• Ear fullness or pressure: A blocked-ear feeling that shifts when you swallow or yawn.
• Sound sensitivity: Normal sounds feel sharp, tiring, or irritating.
• Dizziness or spinning: Not always “ear-related,” but the inner ear is part of balance.

One reality check helps a lot: not every ear symptom during a viral illness comes from the inner ear. Nasal congestion can block the Eustachian tube (the pressure-equalizing pathway behind the eardrum). That can cause fullness, popping, and temporary hearing dullness even if the inner ear is fine.

Can Covid Affect Hearing? What The Research Shows

Researchers have tracked hearing loss, tinnitus, and vertigo reports since early 2020. The headline is mixed. There are real reports and studies showing associations. There are also limits, since many studies rely on symptom recall instead of standardized hearing tests.

Early systematic reviews that pooled studies found that some people with confirmed infection reported tinnitus and hearing loss. The same reviews also flagged big differences in study design, follow-up time, and how outcomes were measured. That’s a polite way of saying: the signal is there, but the exact frequency is hard to pin down from the earliest data.

More recent research has tried to answer a cleaner question: after a COVID diagnosis, do people show higher rates of hearing problems than similar people without COVID? Some large record-based studies report higher rates of hearing-related outcomes after infection in certain groups. Record-based work can reduce “memory bias,” yet it still can’t prove cause for any one person.

So yes, COVID can be linked with hearing symptoms. But the link is not a guarantee of cause in your case. Earwax, allergies, sinus infection, noise exposure, and some medications can create the same “ringing + muffled” combo. Treat new changes as real, then get the right checks.

Can COVID Affect Your Hearing In One Ear Or Both?

Both patterns are reported. Congestion-driven pressure trouble often affects both ears, though one side can feel worse. Inner-ear issues can be one-sided, and that detail matters because a sudden one-sided drop can be time-sensitive.

Use this as a quick gut-check:

• Both ears feel plugged and you’re congested: middle-ear pressure problems rise on the list.
• One ear changed fast: treat it as urgent until proven otherwise.
• Ringing is in both ears but hearing seems “mostly okay”: tinnitus without a large hearing drop is possible, yet a hearing test can catch subtle shifts.

Why COVID Might Affect Ears And Hearing

There isn’t one single mechanism. A few plausible routes can overlap, and the same person can have more than one at once.

Pressure And Fluid From Upper Respiratory Congestion

A stuffy nose can set off a chain reaction. Swollen tissue makes it harder for the Eustachian tube to open. Pressure builds, fluid may collect, and sound transmission through the middle ear drops. That often feels like fullness and muffled hearing, sometimes with crackling or popping.

Inflammation Around The Inner Ear

The inner ear is delicate. Viral illnesses can be linked with inflammation that affects hearing or balance. In some people, symptoms feel like a sudden drop in one ear, loud ringing, or spinning.

Circulation Effects In Tiny Inner-Ear Vessels

The inner ear relies on small blood vessels. If blood flow is disrupted, hearing can change quickly. This is one reason clinicians treat sudden one-sided sensorineural hearing loss as time-sensitive, even when the trigger isn’t clear.

Medication, Sleep Loss, Dehydration, And A “Volume Knob” Effect

Some medicines can aggravate the ear in certain people. Poor sleep, dehydration, and fever can make tinnitus feel louder. Stress can also change how strongly you notice internal sounds. None of that means the symptom is “made up.” It means the brain’s attention system can turn tinnitus up during illness.

Conductive Vs Sensorineural: Two Different Buckets

These two buckets help you understand why the same symptom can come from totally different problems.

Conductive Changes (Sound Can’t Travel Well)

This is the “blocked pathway” bucket. Wax, middle-ear fluid, or pressure issues reduce how well sound reaches the inner ear. People often describe fullness, popping, or muffling that changes during the day.

Sensorineural Changes (Inner Ear Or Nerve Pathway)

This is the “signal problem” bucket. The inner ear or the auditory nerve pathway isn’t transmitting sound normally. Sudden sensorineural hearing loss often shows up as a rapid one-sided change. Tinnitus can happen in both conductive and sensorineural cases, so tinnitus alone doesn’t tell you which bucket you’re in.

Quick Triage: When To Seek Care Right Away

Use this as a safety filter. If any of these apply, don’t wait it out.

• Sudden hearing loss in one ear (or a rapid drop over a day).
• Severe vertigo with vomiting or inability to stand safely.
• Ear pain with high fever or drainage from the ear.
• New neurologic symptoms like facial weakness, slurred speech, or one-sided numbness.
• Hearing loss after head injury or loud blast exposure.

If symptoms are milder—fullness, mild ringing, slight muffling—care is still worth it, just not always same-day urgent. A clinician can check for wax, middle-ear fluid, infection, or other treatable causes.

What You Can Do At Home While You Arrange Care

These steps won’t “fix” sudden inner-ear hearing loss. They can reduce aggravators and help you track what’s changing.

Track The Symptom Like A Mini Log

Write down when it started, which ear, and what else was happening that day (congestion, fever, new medicine, loud noise). Note whether the ringing changes with jaw movement, neck position, or after caffeine or alcohol.

Protect Your Ears From Loud Sound

If you have tinnitus or sound sensitivity, loud audio can make symptoms spike. Keep volume moderate. Use hearing protection in noisy places.

Skip Ear “Digging” And Random Drops

Cotton swabs can irritate the canal and push wax deeper. Unproven drops can inflame the skin in the canal. If you suspect wax, get it checked instead of poking at it.

Gentle Decongestion Moves

Swallowing, sipping water, and steam from a shower may ease pressure feelings tied to nasal congestion. Avoid forceful pressure-equalizing maneuvers that cause pain.

Table Of Common Ear Complaints Around COVID And What They Often Suggest

This table is a sorting tool, not a diagnosis. It helps you match a symptom pattern to a sensible next step.

What You Notice	Common Timing	What To Do Next
Muffled hearing plus stuffy nose	During acute illness or within 7–10 days	Track for improvement as congestion clears; book an exam if it lasts beyond 7 days
Ear fullness that pops when swallowing	With nasal congestion or allergies	Gentle pressure-easing steps; seek care if pain, fever, or drainage appears
New ringing in one or both ears	During illness, after recovery, or during prolonged symptoms	Arrange a hearing test; reduce noise exposure; review recent medicines with a clinician
Sudden drop in hearing in one ear	Minutes to 24 hours	Urgent evaluation the same day
Vertigo with nausea	Acute illness or after	Same-day care if severe; urgent care if you can’t walk safely
Ear pain with fever	During acute infection	Prompt evaluation for ear infection or sinus complications
Sound sensitivity with headaches	After illness, often when sleep is poor	Limit loud sound; check hearing; tighten sleep routine and hydration
Ringing that matches your heartbeat	Any time	Medical evaluation, especially if it’s new or one-sided

How Clinicians Check Hearing After COVID

A solid evaluation starts simple. The clinician will ask about timing, severity, and whether one ear is worse. Then they’ll look in the ear canal and at the eardrum.

Ear Canal And Eardrum Exam

This can catch wax blockage, infection signs, irritated skin, and fluid behind the eardrum. If the issue is wax or middle-ear fluid, the treatment plan is often straightforward.

Hearing Tests That Put Numbers On The Change

A pure-tone audiogram measures the quietest sounds you can hear across pitches. Speech testing checks how clearly you understand words at different volumes. Together, these tests separate “feels muffled” from a true shift in hearing thresholds.

When Specialist Care And Imaging Come Up

Sudden one-sided sensorineural hearing loss, one-sided tinnitus with asymmetric hearing test results, or neurologic signs can trigger specialist referral and additional work-up. The goal is to rule out rarer causes and start time-sensitive treatment when needed.

Long COVID And Ongoing Ear Symptoms

Some people notice ear symptoms that linger after the acute infection clears. Long COVID is used to describe ongoing symptoms that can persist or come and go after infection. The Centers for Disease Control and Prevention notes that Long COVID can involve a wide range of symptoms and that symptom patterns can shift over time. CDC’s Long COVID signs and symptoms page is a useful reference for that broader picture.

In prolonged symptom cases, tinnitus may stick around even when hearing thresholds look normal. Others report fluctuating muffled hearing that tracks with congestion or fatigue. If a symptom keeps returning, a hearing test plus a middle-ear exam can help separate pressure problems from inner-ear changes.

What Tinnitus Means And Why It Can Spike After Illness

Tinnitus is a symptom, not a stand-alone disease. Many people with tinnitus have some degree of hearing loss, even if they don’t notice it in daily conversation. The National Institute on Deafness and Other Communication Disorders explains common tinnitus patterns, causes, and treatment approaches in plain language. NIDCD’s tinnitus overview can help you recognize what fits your case.

After a viral illness, tinnitus can feel louder for practical reasons: disrupted sleep, more time in quiet rooms, more tension in the jaw and neck, and shifts in routine. If tinnitus shows up with a sudden hearing drop in one ear, that’s a different situation and deserves urgent evaluation.

What The Evidence Says About Risk And Frequency

People often want a clean number: “How often does this happen?” The honest answer is that the number depends on the study method. Surveys can capture symptoms that never make it into medical charts, yet they can also overcount by including pre-existing tinnitus people only noticed once they were paying close attention.

Early pooled reviews summarized hearing loss, tinnitus, and dizziness reports and also described study limits like mixed outcome definitions and limited objective testing. If you want to read one open-access summary, this NIH-hosted review on hearing loss, tinnitus, and dizziness in COVID-19 lays out the uncertainty clearly.

Record-based studies can reduce recall issues by using diagnoses and clinical documentation. A 2024 cohort study in the The Lancet family reported an association between COVID-19 and later hearing loss outcomes in young adults using health records. EClinicalMedicine’s cohort study on hearing loss after COVID-19 is one example of that newer approach.

Takeaways that hold up across the messy details: hearing and tinnitus complaints do occur after COVID in some people, middle-ear pressure issues can mimic hearing loss during any respiratory illness, and sudden one-sided hearing loss should be treated as urgent no matter the trigger.

Table Of Tests You May Be Offered And What Each One Checks

If you’re heading into an appointment, these are common tools. Seeing them in advance helps you ask sharper questions and follow the plan without guessing.

Test Or Exam	What It Checks	What Results Can Point Toward
Otoscopy (ear look)	Wax, infection signs, eardrum appearance	Wax blockage, canal irritation, middle-ear infection clues
Tympanometry	Middle-ear pressure and eardrum mobility	Eustachian tube dysfunction, fluid behind the eardrum
Pure-tone audiogram	Hearing thresholds across pitches	Conductive vs sensorineural patterns, severity level
Speech recognition testing	How well you understand words at set volumes	Clarity issues that don’t match “volume” complaints
Otoacoustic emissions (OAE)	Outer hair cell function in the inner ear	Early inner-ear changes even when audiogram is mild
Vestibular testing (when dizzy)	Balance system function	Inner-ear balance disorders vs other dizziness causes
Imaging (selected cases)	Structures beyond the ear canal and middle ear	Ruling out rarer causes when symptoms are one-sided or severe

Steps That Make Your Next Appointment More Productive

When you show up with a clear snapshot, you’re more likely to get the right test the first time.

• Bring your timeline: start date, peak day, and whether it’s improving.
• List recent exposures: a loud event, new headphones, a concert, or power tools.
• List recent meds: prescriptions, over-the-counter meds, and supplements.
• Note one-ear vs both-ears: one-sided symptoms often get a faster work-up.
• Bring two questions: “Is this middle ear or inner ear?” and “Do I need repeat testing?”

Ways To Lower Your Odds Of Lingering Ear Symptoms

You can’t control every variable. You can reduce common aggravators that keep tinnitus and muffling stuck on repeat.

• Protect hearing from loud sound: If tinnitus is active, loud environments can trigger spikes.
• Keep congestion from lingering: Treat nasal congestion and sinus irritation early so pressure problems don’t drag on.
• Build a sleep routine: Sleep disruption can make ringing feel louder the next day.
• Use headphones carefully: Keep volume moderate and take breaks.

A Simple Checklist You Can Use This Week

If you’re worried about hearing changes tied to COVID, use this list to choose your next move without spiraling.

1. Check whether the change is one ear or both ears.
2. If it’s sudden or one-sided, seek urgent care the same day.
3. If it’s fullness with congestion, track it for several days while you arrange a routine exam.
4. Protect your ears from loud sound and keep volume moderate.
5. Book a hearing test if ringing or muffled hearing lasts beyond a week, or sooner if it worsens.