Start with the ears, not the nerves
Vets approach head shaking the same way every time: look in the ears first. The most common drivers are infections, mites, allergies and foreign objects — all fixable, and all easier to treat early (PetMD).
The rarer causes are worth knowing but should not be your first guess:
- Ear infection. Bacteria or yeast overgrow in the canal. Expect thick discharge, swelling and angry itching.
- Ear mites. Microscopic parasites, most common in kittens and cats who meet other animals. The debris is the giveaway.
- Allergies. Dust, pollen or food make the ears itchy. The shaking is scratch relief, not a disease of the ear itself.
- Foreign object. A blade of grass or a piece of toy wedged in the canal. Shaking is the cat trying to dislodge it.
- Ear polyp. A small growth from chronic inflammation. Often comes with discharge and wobbliness.
- Nervous system. Nerves run through the ear canal, so nerve damage — including cerebellar hypoplasia in kittens — can show up as head shaking.
The debris tells the story
What you find in the ear narrows the list faster than any other clue (PetMD):
- Dark debris like coffee grounds points to ear mites — highly likely on sight, confirmed under the microscope.
- Thick discharge with a bad smell fits a bacterial or yeast infection, and often a secondary one riding on top of mites or allergies.
- Clean ears, but she scratches suggests an allergy — the ears are itchy because the skin is reacting, not because something is growing in there.
- No discharge, no scratching, intermittent shaking can be behavioral — anxiety, fear or excitement — and typically comes with no other concerning signs.
A head tilt changes the picture: combined with shaking it moves polyps, deeper infection or a neurological cause up the list, and it belongs in the exam room.
The three-minute ear check at home
Do this once, gently, before you call — it gives the vet a head start:
- Look at both pinnae in good light. Redness, swelling, sores or a puffy, fluid-filled flap (hematoma) all count.
- Smell. A strong odor from the ear is a symptom, not a hygiene failure.
- Note the debris if you can see any: dark and granular, or thick and creamy.
- Watch her walk. Wobbliness, circling or a consistent head tilt are inner-ear or neurological flags.
- Check appetite and energy on the same day — the causes that matter usually travel with other signs.
Skip the deep dive. You cannot see an eardrum from the outside, and probing the canal is how ears get injured.
Skip these home remedies
Well-meant home treatment is the most common way a simple ear problem becomes a stubborn one:
- Cotton swabs. They push debris deeper against the eardrum instead of removing it.
- Hydrogen peroxide or alcohol. Both inflame the canal — vets specifically warn against them, and against any ear medication the vet has not approved.
- Flushing at home. If the eardrum is already damaged, fluid you introduce does harm instead of good.
- Treating one cat in a multi-pet home. Mites spread in close contact, so the untreated pets become the reservoir. Every pet in the household needs the vet's plan.
- Waiting for it to clear. Untreated mites can rupture an eardrum and cost hearing; untreated infection can reach the inner ear.
When the visit is routine — and when it is not
Frequent head shaking, especially with discharge or itching, is a normal-office-hours appointment — the vet examines the ears and the nervous system, identifies the cause, and treats that (PetMD).
Same-day or emergency care is for:
- Vomiting, difficulty breathing, excessive lethargy or seizures alongside the shaking.
- Balance problems, vomiting or lethargy — the pattern seen when an infection has reached the middle or inner ear.
- A swollen, hot, painful ear flap, which can mean a hematoma forming under the skin.
After treatment, mites take roughly a month to eliminate even though cats feel better within days — finish the course and keep the recheck. Monthly parasite prevention plus a weekly ear check is what keeps this off the calendar (PetMD).
If the itching is the louder problem, the allergy side of this lives in our guide to why cats itch so much.
Frequently asked questions
Is occasional head shaking normal?
Brief shaking without discharge or scratching can be behavioral — anxiety, fear or excitement — and typically comes with no other concerning symptoms. Repeated shaking is the version that needs a look (PetMD).
What does coffee-ground debris in cat ears mean?
Debris that looks like coffee grounds makes ear mites highly likely on sight; the vet confirms it with an otoscope exam or cytology under a microscope (PetMD).
Can I clean my cat's ears at home?
Routine ear cleaning is part of prevention, but during an active problem check with your vet first. Hydrogen peroxide and alcohol inflame the ear canal, and no medication should go in the ear without veterinary approval (PetMD).
Are cat ear mites contagious to my other pets?
Yes. Ear mites spread quickly between cats and dogs in close contact, so every pet in the household should be treated. Elimination takes about a month, with a recheck appointment to confirm (PetMD).
Why does my kitten shake her head so much?
Mites are especially common in kittens, so they top the list. Neurological causes such as cerebellar hypoplasia also show up as head shaking in kittens — either way, it is an exam-room question (PetMD).