By Dr Duncan Houston
A painful ear is not a good place to start practising ear cleaning. Head shaking, scratching, a bad smell or dark debris should prompt an examination before anything is poured into the canal.
Successful treatment means identifying what is inflaming the ear, checking the eardrum and using a treatment your cat can tolerate.
Quick Answer
A cat ear infection needs a veterinary examination and usually a microscopic ear sample to identify mites, yeast or bacteria. Use only the cleaner and medicine prescribed for the current problem, because eardrum damage changes which products are safe. A head tilt, falling over, severe pain or sudden neurological changes require urgent veterinary assessment.
Why do cats get sore or infected ears?
Otitis externa means inflammation of the outer ear canal. Ear mites, allergies, foreign material and obstructing growths can start the problem; bacteria or yeast may then multiply. A persistent one-sided problem deserves investigation for a polyp, mass or middle-ear disease. Cornell guidance on feline otitis explains why treating the underlying cause matters.
What will the vet check?
The vet examines both ears and the surrounding skin, looks down the canal with an otoscope and examines a sample of debris. Sedation or anaesthesia may be necessary for a painful or blocked ear. The MSD Veterinary Manual guide to feline otitis describes eardrum assessment, microscopy and further investigation when deeper disease is suspected.
How urgent are the signs?
| What you notice | What it means | What to do and when |
|---|---|---|
| Mild scratching or new wax; otherwise well | Early ear disease is possible | Book an examination soon, before starting drops. |
| Marked pain, pus, bleeding or a swollen ear flap | Significant inflammation or injury | Contact your vet today. |
| Head tilt, falling, abnormal eye movements or facial changes | Possible middle or inner ear or neurological disease | Seek urgent assessment now. |
What else can look like an ear infection?
Dark debris can occur with mites, but its colour alone cannot diagnose them. A swollen ear flap may be a haematoma caused by scratching. Skin disease on the ear edge, a foreign body or a tumour needs different care. Balance signs are not specific to infection and should not be treated with leftover drops.
When is this an emergency?
Seek immediate care for severe balance loss, collapse, inability to stand or rapidly developing neurological signs. If your cat develops a new head tilt or major discomfort after ear medication, stop applying it and contact the treating clinic immediately for advice. Bring the product packaging.
Eight steps for safe treatment at home
- Have the ear examined before beginning treatment.
- Ask which ear or ears to treat, whether cleaning is needed, and the exact schedule.
- Prepare the prescribed supplies and use a quiet area with a non-slip surface.
- Handle gently. Stop if pain or panic prevents treatment and ask the clinic for help.
- If cleaning is prescribed, follow the demonstrated method and wipe only accessible debris. Do not push cotton buds down the canal.
- Apply the prescribed amount of medicine without inserting the nozzle deeply. Follow advice about spacing cleaning and medication.
- Record doses and monitor pain, head shaking, discharge and balance. Report worsening the same day.
- Attend the planned recheck. Visible improvement does not prove the infection has cleared.
Common mistakes
- Using peroxide, vinegar, oils or human ear treatments.
- Giving leftover drops without checking the eardrum or cause.
- Cleaning repeatedly until the canal is raw.
- Stopping treatment early or adding extra medicine because wax remains.
Can ear infections be prevented?
Follow your vet’s parasite plan and investigate recurrent disease. Healthy cat ears generally do not need routine cleaning. If cleaning is necessary for your cat, use the frequency and product your vet recommends, and reward calm handling once the ear is comfortable.
Frequently Asked Questions
Is black earwax always ear mites?
No. A microscopic sample and ear examination are needed to distinguish mites from other causes of debris.
Can I use my dog’s ear drops on my cat?
Only if your vet has specifically prescribed that product for this cat and this episode. Species, ingredients and eardrum status matter.
How long does a cat ear infection take to clear?
The cause and depth of disease determine treatment length. Your vet should set a recheck and confirm resolution rather than relying on a fixed course for every cat.
The safest route to a comfortable ear starts with diagnosis. A manageable home routine and a proper recheck reduce the chance of an apparently healed infection returning.
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