By Dr. Keith Darrow, PhD, CCC-A
If you have received chemotherapy and now notice ringing in your ears, difficulty following conversations, or a need to turn the television louder, you are not imagining it. Certain cancer treatments can affect the delicate structures of the inner ear. The resulting hearing changes may begin during treatment, appear afterward, or become more noticeable as you return to everyday life.
I am Dr. Keith Darrow, and I want cancer patients and survivors to know that hearing health deserves a place in survivorship care. Cancer treatment is focused, appropriately, on saving and extending life. But after treatment, hearing loss or tinnitus can interfere with conversations, sleep, confidence, relationships, and independence. These effects are easy to dismiss as ordinary aging, fatigue, stress, or “chemo brain.” A comprehensive hearing evaluation can help separate the possibilities and establish what support may help.
Research supports taking these symptoms seriously. In a 2022 study of 273 survivors of breast, gastrointestinal, gynecologic, or lung cancer who had received platinum or taxane containing chemotherapy, more than half had clinically significant hearing loss on an audiogram and more than 35% reported tinnitus. The findings do not mean every chemotherapy drug causes hearing damage or that every patient will develop symptoms. They do show why hearing should not be overlooked before, during, or after treatment. (BMJ Supportive & Palliative Care, UCSF study summary)
At Hearing and Brain Centers, our patient promise includes a Hearing Clarity and Tinnitus Relief Guarantee. That guarantee is central to how we approach care: with a personalized plan, measurable goals, and ongoing support focused on clearer communication and meaningful tinnitus relief. It is a hearing care commitment; it does not mean that hearing treatment cures cancer, reverses chemotherapy damage, or guarantees the prevention of dementia. Our team can review the written terms with you so you understand exactly how the guarantee applies to your care.
How Can Chemotherapy Affect Hearing?
The inner ear contains highly specialized sensory cells and neural pathways that convert sound into signals the brain can understand. Some medications can injure these structures. A medicine that can damage the ear is described as ototoxic.
Platinum based chemotherapy drugs, especially cisplatin, are among the best established ototoxic cancer treatments. Cisplatin is highly effective and can be lifesaving, but it may also damage the cochlea. Research supported by the National Institutes of Health found that cisplatin can remain in the inner ear long after it has cleared from many other parts of the body. This may help explain why its hearing effects can be lasting and, in some cases, progressive. (National Cancer Institute, NIDCD)
The risk is not identical for every person. It may vary with the specific drug, total exposure, treatment schedule, age, kidney function, noise exposure, previous hearing status, genetics, and other medications. Some patients receive more than one potentially ototoxic treatment. Radiation involving the head or ear region can also affect hearing, although that is a separate mechanism from chemotherapy.
Taxanes were included in the 2022 survivor study as well, and researchers found substantial hearing problems among patients treated with platinum and taxane containing regimens. However, observational findings cannot prove that chemotherapy alone caused every detected hearing loss. Participants were older adults on average, and factors such as age related hearing loss may also have contributed. That nuance matters: the correct response is not fear, but appropriate monitoring.
Never stop, delay, or change cancer treatment because of hearing symptoms without speaking with your oncology team. The priority is to treat the cancer safely and effectively. Report hearing changes promptly so your oncologist and hearing care professional can coordinate next steps.
Warning Signs of Hearing Loss During or After Chemotherapy
Hearing loss is not always obvious. It can develop gradually, and the brain often compensates by using context, facial expressions, and visual cues. Many people do not realize how much effort they are using to understand speech.
Common signs include:
- Difficulty understanding family members, especially when more than one person is speaking
- Trouble following conversation in restaurants, meetings, or other background noise
- Frequently asking people to repeat themselves
- Feeling that others mumble
- Turning the television or phone volume higher than others prefer
- Missing high pitched voices, alerts, or consonant sounds
- Feeling exhausted after conversations
- Withdrawing from social settings because listening is frustrating
- New ringing, buzzing, hissing, humming, or other sounds in one or both ears
One important lesson from the 2022 study is that self assessment is not always enough. Thirty one percent of participants who denied having hearing loss were found to have hearing impairment on audiometric testing. In other words, a person may adapt to a change without recognizing it. (UCSF)
That is why a baseline test is valuable when possible. If your hearing is measured before treatment, later results can be compared with a known starting point. If treatment has already ended, testing is still worthwhile. It can document your current hearing, identify patterns, and guide a plan.
What Is Tinnitus, and Why Can It Feel Worse at Night?
Tinnitus is the perception of sound without an external source. It may sound like ringing, buzzing, hissing, roaring, clicking, or a high pitched tone. Some people hear it constantly; others notice it intermittently. It may be present in one ear, both ears, or seem to be inside the head.
Tinnitus is a symptom, not a single disease. It can occur with hearing loss, medication effects, noise exposure, ear conditions, jaw problems, and other health issues. For cancer patients, a new onset during or after treatment deserves attention, but it should not automatically be attributed to chemotherapy without an evaluation.
Many people notice tinnitus most at bedtime because the environment becomes quiet. During the day, conversation and ambient sounds may partially mask it. At night, the contrast between silence and the internal sound makes tinnitus more prominent. Stress, poor sleep, and worry can create a cycle: tinnitus makes relaxation harder, and the resulting stress makes tinnitus more intrusive.
A hearing evaluation can look for an associated hearing loss and help determine whether medical referral is needed. Management may include education, sound enrichment, treatment of hearing loss, counseling strategies, sleep support, and, in appropriate cases, specialized tinnitus technology. The goal is not simply to tell a patient to “live with it.” The goal is to reduce its impact and help the brain give the sound less attention.
Seek prompt medical care for tinnitus that pulses with your heartbeat, begins suddenly, occurs with sudden hearing loss, is strongly one sided, or accompanies dizziness, weakness, facial changes, severe headache, or other neurological symptoms.
Chemotherapy, “Chemo Brain,” Hearing Effort, and Memory
Cancer survivors sometimes describe forgetfulness, slower thinking, trouble concentrating, or mental fog. These experiences are often called “chemo brain,” although cognition can be affected by many factors: the cancer itself, treatment, anesthesia, sleep disruption, depression, anxiety, pain, fatigue, medication effects, and the emotional strain of illness.
Untreated hearing loss can add another layer. When speech is unclear, the brain must devote more effort to decoding incomplete sound. A person may appear forgetful when they never clearly heard the information in the first place. Listening effort can also be exhausting, leaving fewer mental resources for attention and recall.
Hearing loss is also recognized as a potentially modifiable factor associated with dementia risk at the population level. Association does not prove that hearing loss directly causes dementia, and hearing treatment should never be presented as a guaranteed way to prevent it. The ACHIEVE randomized trial found that a hearing intervention did not significantly reduce three year cognitive decline across the entire study population, but prespecified and subsequent analyses suggested benefit among older adults at higher risk for cognitive decline. (ACHIEVE secondary analysis)
The responsible takeaway is straightforward: hearing care supports communication, participation, safety, and quality of life. It may also reduce unnecessary listening strain. Those are meaningful benefits today, even while research continues to clarify the relationship between hearing intervention and long term cognitive health.
When Should Cancer Patients and Survivors Have Their Hearing Tested?
Ideally, hearing monitoring should be built around the treatment timeline.
Before treatment
A baseline audiologic evaluation documents your hearing before chemotherapy begins. This is especially important when the treatment plan includes a medication known to be ototoxic. Ask your oncology team whether your regimen carries a recognized risk and whether baseline testing is recommended.
During treatment
Tell your oncology team promptly if you notice tinnitus, muffled hearing, sound sensitivity, pressure, dizziness, or difficulty understanding speech. Depending on the treatment and clinical situation, repeat testing may help track changes. Decisions about cancer therapy belong to the oncology team; hearing professionals provide information that can support those decisions and plan rehabilitation.
After treatment
Cancer survivors should not assume that it is too late to address hearing. An evaluation can identify a treatable ear condition, document permanent loss, and match care to your listening needs. Ongoing monitoring may be appropriate because some changes are recognized late or progress over time.
Bring a list of your chemotherapy medications and other prescriptions if available. Also note when symptoms started, whether they fluctuate, whether one ear is worse, and how hearing or tinnitus affects daily life. These details help make the visit more productive.
What Happens During a Comprehensive Hearing and Tinnitus Evaluation?
A thoughtful evaluation is more than a quick screening. It should connect test findings to your real world experience.
Your appointment may include:
- A detailed case history. We review cancer treatment, symptom timing, noise exposure, health history, medications, communication challenges, tinnitus, balance concerns, sleep, and personal goals.
- An examination of the ear canals and eardrums. This helps identify wax, inflammation, or other visible concerns.
- Pure tone testing. This measures the softest sounds you can hear across pitches. Ototoxic hearing loss often affects higher frequencies first, but each patient’s pattern must be measured.
- Speech testing. Understanding words is different from detecting tones. Speech testing helps show how clearly auditory information is reaching you.
- Additional testing when appropriate. Depending on your symptoms, this may include middle ear measures, speech in noise testing, tinnitus assessment, or referral to a physician.
- A personalized care plan. Results should be explained in plain language, with options tied to the situations that matter most to you.
The purpose is not to sell a device. It is to determine what is happening, what can be improved, and how progress will be measured.
Treatment Options for Hearing Loss and Tinnitus After Chemotherapy
There is no single plan that fits every cancer survivor. Care depends on the type and degree of hearing loss, tinnitus impact, medical history, communication environments, dexterity, technology preferences, and budget.
For hearing loss, appropriately fitted hearing technology can improve access to speech and environmental sound. Modern devices can be programmed to a measured prescription and adjusted for restaurants, family gatherings, television, and other difficult settings. Verification and follow up matter: a device sitting in a drawer provides no benefit, and amplification that is not tailored to the patient may not solve the problem.
For tinnitus, treatment may combine better access to external sound with sound therapy, counseling, education, and strategies that reduce the stress response. When hearing loss and tinnitus occur together, treating the hearing loss may make tinnitus less noticeable for some patients. Results vary, so the plan should establish realistic targets such as easier sleep, less daytime awareness, improved concentration, or lower distress.
At Hearing and Brain Centers, the Hearing Clarity and Tinnitus Relief Guarantee is a central part of our promise to patients. We build care around individual goals, verified treatment, and continuing adjustments, not a one time transaction. Because every medical history and hearing profile is different, our team will explain the guarantee’s written eligibility, measurement, follow up, and remedy terms before treatment begins.
Five Steps You Can Take Now
If you are receiving chemotherapy, have completed treatment, or care for someone who has, start here:
- Ask which drugs were used. Keep a treatment summary and medication list as part of your survivorship records.
- Report changes promptly. Do not wait for tinnitus or hearing difficulty to become severe.
- Schedule a comprehensive hearing evaluation. A screening may miss important information about speech clarity and real world function.
- Protect your remaining hearing. Use appropriate hearing protection around damaging noise, but avoid wearing earplugs unnecessarily in ordinary settings because excessive silence can make tinnitus more noticeable.
- Coordinate care. Your oncologist, primary care physician, and hearing care professional each contribute different expertise.
Cancer survival is about more than completing treatment. It is about returning to the people, activities, and conversations that give life meaning. Hearing difficulty can quietly shrink that world. Addressing it can help you reconnect.
Schedule a Hearing and Tinnitus Evaluation
If chemotherapy was part of your cancer treatment and you have noticed ringing, muffled sound, trouble understanding family, difficulty in background noise, louder television volume, or increased listening fatigue, schedule a comprehensive evaluation with Hearing and Brain Centers.
Our team will assess your hearing, listen to your goals, explain the findings, and determine whether you are a candidate for a personalized plan supported by our Hearing Clarity and Tinnitus Relief Guarantee.
This article is educational and is not a substitute for individualized medical advice. Do not change cancer treatment or medication without consulting your oncology team. Sudden hearing loss requires urgent medical evaluation.
Frequently Asked Questions
Can chemotherapy cause permanent hearing loss?
Yes. Certain chemotherapy drugs, particularly platinum based drugs such as cisplatin, can damage the inner ear and cause permanent sensorineural hearing loss. Risk varies by drug, exposure, health factors, age, and prior hearing. Not every chemotherapy regimen is equally ototoxic, so ask your oncology team about your specific medications.
Which chemotherapy drugs are most associated with hearing loss?
Cisplatin is one of the best established ototoxic chemotherapy drugs, and carboplatin may also affect hearing. Research has identified substantial hearing problems among some survivors treated with platinum or taxane containing regimens, but an individual’s test results cannot be attributed to chemotherapy without considering age and other causes.
Can chemotherapy cause tinnitus?
Yes, tinnitus may begin or worsen during or after some cancer treatments, often alongside hearing changes. Because tinnitus has many possible causes, new symptoms should be evaluated rather than automatically blamed on chemotherapy.
When should I have my hearing tested during cancer care?
When possible, have a baseline test before an ototoxic treatment begins, monitoring during treatment as recommended, and follow up after treatment. Seek prompt assessment for new tinnitus, muffled hearing, or difficulty understanding speech. Sudden hearing loss is urgent and should be evaluated immediately.
Can hearing aids help hearing loss caused by chemotherapy?
Hearing aids cannot repair damaged inner ear cells, but properly selected, fitted, and verified technology can improve access to speech and make communication easier. Outcomes depend on the hearing pattern, speech understanding, listening environments, and consistent follow up.
Can treating hearing loss reduce tinnitus?
For some people with both hearing loss and tinnitus, improving access to external sound makes tinnitus less noticeable. Other patients benefit from sound therapy, counseling, sleep strategies, or a combined tinnitus plan. No single method works for everyone, which is why individualized assessment matters.
Does treating hearing loss prevent dementia?
Hearing treatment is not a guaranteed method of preventing dementia. Hearing loss is associated with cognitive decline risk, and hearing intervention may benefit cognition in some higher risk older adults. The most immediate, established goals are clearer communication, less listening strain, greater participation, and better quality of life.
What does the Hearing Clarity and Tinnitus Relief Guarantee mean?
It is Hearing and Brain Centers’ commitment to build care around personalized goals, verified treatment, and follow up aimed at clearer hearing and meaningful tinnitus relief. It does not guarantee a cure for cancer, reversal of inner ear damage, or prevention of dementia. The care team will provide and explain the written eligibility and remedy terms before treatment.