Most owners arrive here having already done everything asked of them. The ear was cleaned, the drops went in, it got better, and six weeks later it was back. By the third round the question has changed from what to put in the ear to why it keeps happening, and that is the question a dermatology work-up is built to answer.
Recurrence is information, not failure
An ear infection is almost never the whole story. In dogs most recurring ear problems sit on top of an underlying allergic condition — environmental or food-driven — and the ear is often the first place it shows. Published figures put allergy behind somewhere between four and seven of every ten dogs with ongoing ear trouble, and in a good number of those the ear is the only sign anybody notices.
So when an ear clears and returns, nothing has gone wrong with the care. The ear responded exactly as it should. What has not been addressed is the reason the ear was inflamed in the first place, and until that is named the cycle continues.
There are other reasons, and they matter because they change the plan entirely: a foreign body such as a grass seed, a polyp or growth in the canal, ear mites in a young animal, and in some breeds a canal shaped in a way that never drains properly. An underactive thyroid in a middle-aged dog is a classic quiet cause of ears that keep coming back.
What goes wrong when the cycle runs long
Repeated inflammation changes the ear itself, and those changes are what make a long-running ear so much harder than a new one.
- The canal narrows. Chronic swelling thickens the lining, and a narrow canal holds debris and resists anything put into it.
- The organisms change. Early cases are usually straightforward. Long-running ones shift toward yeast and toward bacteria that are far harder to clear, which is why identifying what is actually growing matters more with each round.
- The eardrum may not be intact. This is the one owners are rarely told about. A ruptured drum changes what can safely go into the ear and means the middle ear is now involved — and a drum that looks normal does not rule that out. In ears that have been recurring for six months or more, the middle ear is involved in up to nine cases in ten.
- In the worst cases the canal calcifies, and at that point no amount of anything poured in will reach the problem.
That progression is the real argument for coming sooner rather than after the fifth round. Most of it is reversible early and some of it is not reversible late.
What a dermatology work-up adds
The difference is not a stronger bottle. It is looking properly and finding the driver.
Ear care here starts with examining the canal under magnification rather than from the opening, taking samples to see what is actually growing rather than assuming, and checking whether the eardrum is intact. Video-otoscopy lets us see the full depth of the canal and the drum on a screen, flush the canal properly under anesthetic, and retrieve the grass seed or the polyp that no amount of drops was ever going to fix.
Alongside that, allergy testing goes after the underlying cause, because the ear will keep returning until it is identified. For an allergic dog that means a structured work-up rather than guesswork, and where food is the driver it means a properly run elimination trial, not a blood test — the blood and saliva tests sold for food allergy are not reliable for this, and a half-done trial answers nothing.
Most of our patients arrive through their family veterinarian, and we work alongside them throughout. Our referral process sets out what we need and what your own vet gets back, which is the full set of findings, sample results and the plan.
What you can do before the appointment
- Stop putting anything new in the ear for about a week beforehand unless you have been told otherwise. We can read an ear far more usefully with nothing in it.
- Bring the history, including the failures. What was used, how long it worked, how quickly it came back. That pattern is diagnostic in itself.
- Write down the other signs, even ones that seem unrelated: paw licking, face rubbing, a bald patch, scooting, a musty smell. Those are what point at the driver.
- Note whether it is seasonal. An ear that flares every spring behaves differently from one that never settles.
- Do not clean it that morning. We would rather see what is in there.
- Come fasted. If we are likely to need to look deep, your pet should have an empty stomach. The team will confirm this when you book.
- Mention swimming, grooming and head shaking after walks, which occasionally reframes the whole picture.
Our hours and locations
We see cats and dogs at two clinics. Our Vancouver location at 15 East 3rd Avenue is open Wednesday and Thursday, and our Surrey location at 14823 108 Avenue is open Monday, Tuesday, Thursday and Friday. Both run from 8:00 am to 4:30 pm, and both are closed Saturday and Sunday. You can reach the phone line Monday to Friday from 8:00 am to 4:30 pm.
We are a referral practice rather than an emergency service, and our hours reflect that. An ear that has become suddenly, severely painful, a dog who has lost balance or developed a head tilt, or any animal in acute distress should go to your own veterinarian or an open emergency hospital the same day rather than waiting for an appointment with us.
Common questions
Can I come straight to you for an ear that keeps coming back?
Yes. Most of our patients arrive through their own veterinarian and that is the smoothest route, because we start from their records rather than from scratch — but you can request a consultation directly, and for a third or fourth round of the same ear it is a reasonable thing to do.
Why might my dog need an anesthetic just for an ear?
It depends on the ear, how sore it is and how your dog copes. A painful, narrowed canal cannot be examined to its full depth, flushed properly, or cleared of a foreign body in an awake animal — so where it is needed, the anesthetic is what makes the examination worth doing at all.
My dog has never seemed itchy anywhere else. Can it still be allergy?
Yes, and this surprises people. In a meaningful share of allergic dogs the ear is the only place it shows, sometimes for a long time before anything appears on the skin.
Will this be a lifelong thing?
If allergy is the driver, it is usually managed rather than cured. That sounds worse than it is: a well-managed allergic dog has comfortable ears most of the time, and the gap between flares gets much longer once the cause is being handled.
Can cats get recurring ear problems too?
They can, and the reasons differ more often than in dogs. Mites, polyps and growths feature more prominently, which is another reason looking properly beats repeating a bottle.
Speak to the team at VetDERM Clinic
If an ear has come back more than twice, the useful next step is not another round of the same thing. Bring the history of what has been tried, and let us find out what the ear is reacting to.
Published by the team at VetDERM Clinic.
This article is educational in nature and is not a replacement for hands-on assessment of your own pet by a veterinarian.
VetDERM Clinic
Vancouver: 15 East 3rd Avenue, Vancouver, BC V5T 1C5 (Wednesday and Thursday)
Surrey: 14823 108 Avenue, Surrey, BC V3R 1W2 (Monday, Tuesday, Thursday and Friday)
Phone: (604) 564-2214
Email: info@vetdermclinic.com
Hours: 8:00 am to 4:30 pm at both locations; closed Saturday and Sunday
