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cat ear infections: signs, causes, and when to see a vet
Cat ear infections are less common than ear infections in dogs, and they often point to an underlying problem, such as ear mites, allergies, or a polyp in the ear. Common cat ear infection symptoms include head shaking, scratching or pawing at the ears, foul odor, and dark or yellow discharge.
If your cat shows these signs, schedule a veterinary exam rather than trying to treat the problem at home. Ear mites and infections can look similar, and the wrong cleaning product or medication can hurt a cat’s ear — especially if the eardrum is damaged. A veterinarian can examine your cat’s ears and use an ear swab and cytology to help identify the cause and choose the right treatment.
What is a cat ear infection (feline otitis)?
A cat ear infection, also called feline otitis, is inflammation or infection of the ear. It can affect different parts of the ear:
- Otitis externa: inflammation or infection of the outer ear canal
- Otitis media: inflammation or infection of the middle ear, behind the eardrum
- Otitis interna: inflammation or infection of the inner ear, which helps control hearing and balance
Cats are generally less prone to ear infections than dogs. When a cat develops an infection, an underlying issue — such as ear mites, allergies, or a growth in the ear canal — may be contributing to the problem.
Identifying that underlying cause matters. Treating the infection alone may relieve symptoms temporarily, but the problem can return if the original cause is not addressed.
What are the signs of an ear infection in cats?
Signs of an ear infection in cats can include changes in behavior, visible irritation, and unusual discharge or odor. Watch for:
- frequent head shaking
- scratching or pawing at one or both ears
- dark, brown, yellow, or waxy ear discharge
- a foul or unusual smell coming from the ears
- redness or swelling inside the ear
- pain or sensitivity when the ears are touched
- scratches, scabs, or raw skin around the ears
- a head tilt or changes in balance
A cat may hide, become irritable, or resist having its head touched when its ears hurt. Some cats also groom or scratch the area enough to injure the surrounding skin.
When to seek veterinary care
A head tilt, disorientation, circling, or rapid eye movements can signal a problem involving the middle or inner ear. Make an appointment at your vet if you notice these signs. Seek urgent veterinary care if your cat has severe balance problems, cannot walk normally, or seems suddenly very unwell.
Not every cat with itchy ears has an infection. Ear mites and other conditions can cause similar signs, so a veterinary exam is the safest way to determine what is happening.
Is it ear mites or an ear infection?
Ear mites and ear infections can look similar, and a veterinarian often needs to examine the ear and test a sample to tell them apart. Appearance alone cannot confirm the cause.
| Clue | Ear mites | Ear infection |
|---|---|---|
| Typical discharge | Dry, dark, crumbly debris that may resemble coffee grounds | Brown, yellow, or waxy discharge that may have an unpleasant odor |
| Usual cause | Tiny parasites that live in the ear canal | Often linked to an underlying issue, such as allergies, ear mites, or a polyp; bacteria or yeast may contribute |
| Who is affected most | More common in kittens and cats that go outdoors or have contact with affected animals | Can affect cats of different ages, depending on the underlying cause |
| Contagiousness | Can spread between cats and other susceptible animals through close contact | Depends on the cause; the infection itself is not always contagious |
Both conditions can cause itching, irritation, and head shaking. A veterinarian can examine an ear sample under a microscope to look for mites, yeast, or bacteria and recommend treatment based on the findings.
If you suspect ear mites, learn more about ear mites in cats. Avoid using an over-the-counter mite treatment or infection medication without veterinary guidance. The wrong product may not address the actual cause and could make irritation worse.
What causes ear infections in cats?
Cat ear infections can develop for several reasons. Finding the cause helps your veterinarian choose treatment and reduce the chance that the infection will return.
Common causes and contributing factors include:
Ear mites: these parasites can irritate the ear canal and are especially common in kittens. The irritation may create conditions for a secondary infection.
Allergies: environmental or food-related allergies can cause inflammation and may contribute to recurring ear problems.
Polyps or masses: growths in the ear canal or nearby structures can interfere with normal drainage and contribute to inflammation or infection.
Foreign material or trapped moisture: material in the ear or excess moisture may irritate the canal and contribute to problems.
Underlying health conditions: conditions that affect the immune system, including feline immunodeficiency virus (FIV) or feline leukemia virus (FeLV), may be relevant when a cat has recurring or persistent infections.
A cat ear yeast infection occurs when there’s an overgrowth of yeast in the ear, which can cause inflammation and discomfort. Yeast is diagnosed with ear cytology.
If your cat’s ear infection keeps coming back, ask your veterinary team whether an underlying allergy, polyp, parasite, or other health issue could be contributing. Repeatedly treating the ear without addressing the underlying cause may only provide temporary relief.
Can you treat a cat ear infection at home?
No. A cat ear infection cannot be safely treated at home without a veterinary diagnosis. Different conditions require different treatments, and some ear medications or cleaning products can cause harm if the eardrum is damaged.
Do not put these products in your cat’s ear:
rubbing alcohol
hydrogen peroxide
vinegar or apple cider vinegar
human ear drops
leftover prescription ear medication or medication prescribed for another pet
These products can irritate sensitive tissue. If the eardrum is ruptured or damaged, certain substances can cause significant pain, hearing loss, balance problems, or facial nerve damage.
While you wait for your cat’s appointment, you can take a few safer steps:
Avoid putting anything into the ear canal. Do not flush the ear or try to remove debris lodged deep inside.
Wipe only visible outer-ear debris, if needed. Use a veterinarian-approved ear cleaner only if your veterinary team has confirmed it is appropriate for your cat’s situation. Stop if your cat seems in pain or distressed.
Limit scratching. If your cat is injuring the skin around the ear, ask your vet how to protect the area safely.
Monitor changes. Note any new discharge, odor, swelling, head tilt, or balance problems to share at the appointment.
Home care can help you keep your cat comfortable until your vet appointment, but it doesn’t replace diagnosis and treatment.
How do veterinarians diagnose and treat cat ear infections?
A veterinarian will examine your cat’s ears, look for signs of inflammation, and investigate what is causing the problem. The process may include:
- Looking inside the ear. An otoscope helps the veterinarian examine the ear canal and, when possible, check the eardrum.
- Collecting an ear sample. Ear debris can be examined under a microscope to look for mites, yeast, and bacteria.
- Choosing targeted treatment. Depending on the findings, treatment may include prescription ear medication and care for the underlying cause.
- Planning a recheck. A follow-up exam may be needed to confirm the problem has cleared and determine whether treatment should continue.
Some cats have ears that are too painful or inflamed for a comfortable examination or thorough cleaning while awake.
In those cases, the veterinarian may recommend sedation to allow a safer, more complete evaluation or cleaning.
Treatment depends on the diagnosis. A cat with ear mites needs parasite treatment, while an infection involving bacteria or yeast may require different medication.
If allergies or a polyp are contributing, those issues also need attention.
Follow your veterinarian’s instructions for the full course of medication and any recommended rechecks, even if your cat seems better before treatment ends. If symptoms persist or return, let your veterinary team know rather than restarting old medication on your own.
Optimum Wellness Plans® help support your cat’s ears with unlimited office visits and an ear cytology during their first plan year. With your plan discount, you can save on treatment too! Explore OWPs
How to safely clean a cat’s ears (even one that resists)
Routine ear cleaning is not necessary for every cat. Clean your cat’s ears only when your veterinarian recommends it and explains which product to use. If your cat has discharge, odor, redness, or pain, arrange an exam before attempting to clean the ear.
For a cat that has been cleared for routine cleaning:
- Choose a calm setting. Work in a quiet room and let your cat settle before you begin.
- Gather supplies first. Use the veterinarian-approved ear-cleaning solution and gauze or a cotton ball.
- Handle your cat gently. If needed, have a second person help hold your cat comfortably. A towel wrap may help a fearful cat feel more secure, but do not restrain your cat in a way that interferes with breathing or causes distress.
- Clean only what you can see. Wipe the visible parts of the ear with gauze or a cotton ball. Never push a cotton swab deep into the ear canal.
- Stop if your cat resists or seems painful. Do not force the cleaning or continue if you notice redness, discharge, or signs of discomfort.
If your cat becomes distressed, stop and ask your veterinary team for help. For more detailed instructions, see how to clean your cat’s ears
How to help prevent ear infections in cats
You cannot prevent every ear infection, but regular care and early attention to symptoms can help reduce the risk of recurring problems.
- Check your cat’s ears regularly. Look for new discharge, odor, redness, or irritation without inserting anything into the ear canal.
- Manage allergies with your veterinary team. If your cat has recurring ear inflammation, ask whether allergies or another underlying condition could be involved.
- Keep ears dry when appropriate. Avoid unnecessary moisture or products in the ear canal, and follow your veterinarian’s advice after bathing or grooming.
- Use year-round parasite prevention. Ask your veterinary team which parasite prevention is appropriate for your cat’s lifestyle and health.
- Keep up with wellness exams. Routine veterinary visits can help identify health concerns and provide an opportunity to discuss recurring ear symptoms.
If ear problems return after treatment, do not assume your cat simply needs another round of the same medication. A follow-up exam can help determine whether the original cause is still present or whether the diagnosis or treatment needs to be reconsidered.
Cat ear infection FAQs
Can a cat ear infection heal on its own?
A cat’s ear symptoms may improve temporarily, but an underlying infection or cause may remain. Waiting can allow inflammation to worsen or the problem to spread deeper into the ear. Schedule a veterinary exam if your cat has persistent scratching, head shaking, odor, or discharge.
Can indoor cats get ear infections?
Yes. Indoor cats can develop ear infections due to allergies, ear mites, polyps, and other underlying conditions. Staying indoors does not rule out an ear problem, so symptoms should still be checked by a veterinarian.
Is a cat ear infection contagious to other pets?
It depends on the cause. Ear mites can spread through close contact between animals, but many ear infections related to allergies or other underlying conditions are not contagious. A veterinarian can help determine the cause and advise whether other pets need to be checked or treated.
What happens if a cat ear infection goes untreated?
An untreated ear problem can cause ongoing pain, irritation, and damage from scratching. Some infections may spread to the middle or inner ear, potentially affecting hearing or balance. Prompt veterinary care can help identify the cause and reduce the risk of complications.
Why is there black or brown gunk in my cat’s ear?
Black or brown debris can be associated with ear mites, wax buildup, inflammation, or infection. Dry debris that resembles coffee grounds can be a clue to ear mites, but appearance alone cannot confirm the cause. See your vet to determine what’s causing debris in your cat's ears.
Why did my cat’s ear infection come back after antibiotics?
An infection may return if the medication was not administered correctly. Review the instructions with your vet so you feel comfortable performing the treatment. Infection can also return if the underlying cause — such as allergies, ear mites, or a polyp — was not identified or resolved. Your veterinarian can examine the ear and determine what to do next.
Is rubbing alcohol or apple cider vinegar safe to use in a cat’s ear?
No. Do not put rubbing alcohol or apple cider vinegar in your cat’s ear. These substances can irritate the ear, and inappropriate products may cause serious harm if the eardrum is damaged. Use only products recommended for your cat’s condition.
How much does it cost to treat a cat ear infection?
The cost depends on what is causing the problem and what care your cat needs. The total may include an exam, ear cytology or other testing, medication, a follow-up visit, and sedation or additional procedures for severe or recurring cases. Banfield pricing varies by location and individual case, so contact your local hospital for details.
How do I clean my cat’s ears safely?
Clean your cat’s ears only when your veterinarian recommends it, using an approved solution and gauze or a cotton ball to wipe the visible outer ear. Never insert a cotton swab deep into the ear canal or try to clean an ear that looks infected or painful. If your cat resists handling, stop and ask your veterinary team for guidance.
Questions? Ask your Banfield veterinary team
Not sure whether your cat’s ears actually need cleaning? Or is your cat making it nearly impossible to clean them safely? Your Banfield veterinary team can check your cat’s ears, look for problems such as infection or ear mites, and help you create a safe ear-care routine.
If your cat has frequent ear issues, Optimum Wellness Plans® can help make ongoing care more affordable. An ear exam is included in the first year of all plans, plus you can use your plan discount on treatment.
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