Scratching Ears — Cat Symptom Guide

Cats that scratch their ears can have ear mites, yeast or bacterial infections, allergies, polyps or a foreign body. This guide helps assess urgency and next steps.

Quick Assessment

• Is this an emergency?

• Most common cause: ear mites in young/outdoor cats and allergies or yeast in adults.
• When to see a vet: persistent scratching for >48–72 hours, visible discharge (brown/black or yellow/green), foul odor, head tilt, or any signs of pain.

What this symptom looks like

Ear scratching in cats can range from occasional pawing or shaking the head to constant pawing, rubbing the ear on furniture, or vigorous scratching that causes scabs or bleeding. Owners may notice:

• Repeated pawing at one or both ears.
• Head shaking or head tilt.
• Scabs, hair loss around the ear, redness, swelling.
• Brown/black “coffee-ground” debris, waxy gray-brown material, yellow/green pus, or a sour/foul odor.
• Changes in behavior (irritability, hiding), loss of balance, or circling if the inner ear is involved.

Possible causes (ranked by likelihood)

Less common/rare causes: neurological disease, systemic disease with secondary ear involvement, primary inner ear infection.

Decision tree — quick triage

• If scratching + dark crumbly discharge (coffee-ground) → likely ear mites → action: see vet for otoscopic exam and microscopic ear swab; treat all in-contact pets.
• If scratching + strong, musty odor + greasy brown wax → likely yeast → action: schedule vet visit for cytology and prescription topical antifungal ± oral meds.
• If sudden severe scratching + pawing + visible object or swelling → likely foreign body → action: urgent vet visit; do not probe the ear yourself.
• If scratching + both ears + paw licking + seasonal pattern → likely allergies → action: see vet for allergy work-up, anti-itch plan, and management.
• If scratching + unilateral persistent discharge + head tilt or bleeding → possible polyp or mass → action: prompt vet visit for otoscopy/imaging and specialist referral.

Home assessment steps (safe, structured)

What NOT to do at home: never insert cotton swabs, hairpins, or tweezers into the ear canal. Don’t use over-the-counter ear drops or antibiotics without veterinary guidance.

Safe ear examination at home (step-by-step)

If you cannot see the canal because of heavy wax, bleeding, or the cat is painful or fractious, stop — professional cleaning/otoscopy is required.

When professional cleaning is needed

• Heavy wax build-up that you cannot remove safely at home.
• Thick, foul-smelling, or purulent discharge.
• Recurrent ear problems despite previous home care.
• Pain on touching the ear, bleeding, or suspicious masses.

Home care — safe things you can do while monitoring

• Keep the area dry and clean of hair and scabs, using a soft cloth; do not insert anything into the canal.
• For mild, superficial dirt, a damp cotton ball (not a Q-tip) at the ear entrance can help. Do not push debris deeper.
• Apply only vet-approved ear cleaners or treatments if previously prescribed for this cat. Follow dose and duration exactly.
• Manage parasites: ensure regular flea/ear-mite preventative as advised by your veterinarian for all pets in the household.
• Reduce stress and environmental allergens where possible (regular vacuuming, HEPA filters, avoid known triggers).
• Record observations: frequency, appearance, and response to any short-term measures.

When it's an emergency (red flags)

Seek immediate veterinary care if you see any of the following:

• Heavy bleeding from the ear or a large open wound.
• Continuous vigorous pawing at the ear, shouting, or signs of severe pain.
• Fever over 103°F (39.4°C) — measure with a rectal thermometer if you can do so safely.
• Collapse, seizures, respiratory distress, or sudden inability to move normally.
• Maggots or visible foreign material deeply embedded in the ear canal.
• Severe neurologic signs (pronounced head tilt, circling, loss of balance) suggesting inner ear or brain involvement.

When to schedule a vet visit (non-urgent but needed)

Make an appointment within 24–72 hours if your cat has:

• Persistent scratching for more than 48–72 hours.
• Any discharge (dark crumbly, yellow/green), foul odor, or redness.
• Recurring ear problems despite home care.
• Signs of hearing loss or intermittent head tilt.
• More than one pet household with similar signs (ear mite risk).

What your vet will likely do

• Otoscopic exam to visualize the ear canal.
• Ear swab and microscopic cytology to look for mites, yeast, or bacteria.
• Culture if infection is resistant or chronic.
• Imaging (radiographs or CT) if polyps, masses, or middle/inner ear disease is suspected.
• Sedation/anesthesia for deep cleaning and removal of foreign bodies.

What to tell your vet — helpful details

• Exact duration of scratching and any changes over time.
• Which ear(s) are affected and whether it is one-sided or both.
• Description of discharge (color, consistency, smell) and presence of bleeding.
• Frequency of scratching episodes (e.g., several times per hour, constant).
• Any recent outdoor activity, swimming, or exposure to other animals.
• Recent medications, flea/tick/antiparasitic treatments, or topical products used.
• Household details: other pets with similar signs, multi-cat household, recent boarding.
• Photos or videos of the scratching and ear appearance.

Preventive notes and prognosis

• Many ear problems are treatable when diagnosed early. Ear mites often resolve with appropriate acaricides; infections usually respond to targeted therapy after cytology/culture.
• Allergies are chronic conditions requiring long-term management.
• Left untreated, chronic otitis can lead to hearing loss or deeper ear involvement; prompt care prevents complications.

Sources

• Merck Veterinary Manual — Otitis externa and ear mites: https://www.merckvetmanual.com/ear-disorders
• Cornell University College of Veterinary Medicine — Feline ear problems guidance.

Frequently Asked Questions