If your Labrador is getting ear infections repeatedly — cleared by the vet, back within weeks or months — the treatment is resolving the symptom but not the underlying cause. Recurring ear infections in Labs almost always have a root cause that hasn’t been identified yet. Finding and addressing it is the only way to break the cycle.
The most common underlying causes
Allergies — the most common root cause
In Labs who get repeated ear infections, allergies are the underlying cause in the majority of cases. Allergic inflammation changes the environment of the ear canal — increasing moisture and altering the microbial balance — which allows bacteria and yeast to overgrow. Treating the ear infection itself doesn’t address the allergic inflammation that keeps creating the conditions for recurrence.
Two types of allergy drive recurring ear infections:
- Environmental allergy (atopy): Reactions to dust mites, pollen, mould — often seasonal. Labs with atopy often also have itchy paws, belly, and face.
- Food allergy: Reactions to specific protein sources. Usually year-round, not seasonal. A strict elimination diet trial (typically 8–12 weeks on a novel protein or hydrolysed diet with nothing else) is required to diagnose this properly.
Anatomy — the Labrador ear structure
Labs have long, floppy ear flaps that reduce airflow into the canal, and the canal angles downward before turning toward the eardrum — ideal for retaining moisture. This anatomy predisposes them to infections regardless of allergy status. It means that Labs who swim regularly need consistent after-swim ear care as a permanent routine, not just after infections.
Foreign bodies
Grass seeds — particularly in summer — are a common cause of sudden, often severe ear infections in Labs who spend time in long grass. A grass seed that enters the ear canal is a foreign body that causes intense irritation and infection. These require removal by a vet; they don’t resolve on their own.
Incomplete treatment
An ear infection that appears to resolve but wasn’t fully cleared — often because the treatment course wasn’t completed or the recheck was skipped — will recur. The organism isn’t fully eradicated, and the surviving population (potentially with some antibiotic resistance) bounces back once treatment stops.
Getting to the bottom of it
If your Lab has had two or more ear infections in a year, ask your vet for an investigation beyond just treating the current infection. This should include:
- Cytology (microscopy of ear discharge) to identify bacteria, yeast, or mixed infection — and culture/sensitivity testing if bacteria are present, to confirm appropriate antibiotics
- A full skin and allergy assessment — particularly if there are other signs of allergy (itchy paws, belly, face)
- A food elimination trial if environmental allergy testing is negative or inconclusive
- Referral to a veterinary dermatologist for complex or non-resolving cases
Preventive maintenance for prone Labs
- Ear drying solution after every swim
- Monthly ear cleaning with a vet-approved cleaner — even between infections
- Keeping ear flaps dry after bathing
- Managing underlying allergy with vet guidance (antihistamines, Apoquel, Cytopoint, or allergen-specific immunotherapy for atopic dogs)
- Diet trial if food allergy is suspected
My take: treating the infection repeatedly is not a strategy
A Lab who has recurring ear infections needs a proper investigation, not a repeat prescription. The vet visit that uncovers the underlying allergy or removes the grass seed is the one that breaks the cycle — not the fifth course of ear drops. Push for investigation rather than repeat treatment if the problem keeps coming back.
People also ask about recurring Lab ear infections
How do I know if my Lab’s ear infection is allergy-related?
Clues that allergy is involved: the infections recur despite proper treatment, there are other itchy areas (paws, belly, face), the pattern is seasonal, and your Lab is in a breed known for atopy (Labs are). A vet examination assessing the full skin picture alongside the ears is the right starting point.
Can diet change stop recurring ear infections in Labs?
If food allergy is the underlying cause, yes — an appropriate diet change can significantly reduce frequency. But establishing whether food allergy is the cause requires a strict elimination trial, not just switching to a different supermarket food. The trial must use a truly novel protein (one the dog has never eaten) or a hydrolysed diet, with absolutely nothing else for 8–12 weeks. Your vet or a veterinary nutritionist can guide this properly.
My Lab has had 4 ear infections this year — is that normal?
No — it’s common in Labs, but it’s not something you should just accept as inevitable. Four infections in a year means the underlying cause hasn’t been found or isn’t being managed. Ask your vet for a dermatology referral or a more thorough investigation. A veterinary dermatologist sees cases like this regularly and has tools beyond general practice for identifying and managing the root cause.
“, “rendered”: ”If your Labrador is getting ear infections repeatedly — cleared by the vet, back within weeks or months — the treatment is resolving the symptom but not the underlying cause. Recurring ear infections in Labs almost always have a root cause that hasn’t been identified yet. Finding and addressing it is the only way to break the cycle.
The most common underlying causes
Allergies — the most common root cause
In Labs who get repeated ear infections, allergies are the underlying cause in the majority of cases. Allergic inflammation changes the environment of the ear canal — increasing moisture and altering the microbial balance — which allows bacteria and yeast to overgrow. Treating the ear infection itself doesn’t address the allergic inflammation that keeps creating the conditions for recurrence.
Two types of allergy drive recurring ear infections:
- Environmental allergy (atopy): Reactions to dust mites, pollen, mould — often seasonal. Labs with atopy often also have itchy paws, belly, and face.
- Food allergy: Reactions to specific protein sources. Usually year-round, not seasonal. A strict elimination diet trial (typically 8–12 weeks on a novel protein or hydrolysed diet with nothing else) is required to diagnose this properly.
Anatomy — the Labrador ear structure
Labs have long, floppy ear flaps that reduce airflow into the canal, and the canal angles downward before turning toward the eardrum — ideal for retaining moisture. This anatomy predisposes them to infections regardless of allergy status. It means that Labs who swim regularly need consistent after-swim ear care as a permanent routine, not just after infections.
Foreign bodies
Grass seeds — particularly in summer — are a common cause of sudden, often severe ear infections in Labs who spend time in long grass. A grass seed that enters the ear canal is a foreign body that causes intense irritation and infection. These require removal by a vet; they don’t resolve on their own.
Incomplete treatment
An ear infection that appears to resolve but wasn’t fully cleared — often because the treatment course wasn’t completed or the recheck was skipped — will recur. The organism isn’t fully eradicated, and the surviving population (potentially with some antibiotic resistance) bounces back once treatment stops.
Getting to the bottom of it
If your Lab has had two or more ear infections in a year, ask your vet for an investigation beyond just treating the current infection. This should include:
- Cytology (microscopy of ear discharge) to identify bacteria, yeast, or mixed infection — and culture/sensitivity testing if bacteria are present, to confirm appropriate antibiotics
- A full skin and allergy assessment — particularly if there are other signs of allergy (itchy paws, belly, face)
- A food elimination trial if environmental allergy testing is negative or inconclusive
- Referral to a veterinary dermatologist for complex or non-resolving cases
Preventive maintenance for prone Labs
- Ear drying solution after every swim
- Monthly ear cleaning with a vet-approved cleaner — even between infections
- Keeping ear flaps dry after bathing
- Managing underlying allergy with vet guidance (antihistamines, Apoquel, Cytopoint, or allergen-specific immunotherapy for atopic dogs)
- Diet trial if food allergy is suspected
My take: treating the infection repeatedly is not a strategy
A Lab who has recurring ear infections needs a proper investigation, not a repeat prescription. The vet visit that uncovers the underlying allergy or removes the grass seed is the one that breaks the cycle — not the fifth course of ear drops. Push for investigation rather than repeat treatment if the problem keeps coming back.
People also ask about recurring Lab ear infections
How do I know if my Lab’s ear infection is allergy-related?
Clues that allergy is involved: the infections recur despite proper treatment, there are other itchy areas (paws, belly, face), the pattern is seasonal, and your Lab is in a breed known for atopy (Labs are). A vet examination assessing the full skin picture alongside the ears is the right starting point.
Can diet change stop recurring ear infections in Labs?
If food allergy is the underlying cause, yes — an appropriate diet change can significantly reduce frequency. But establishing whether food allergy is the cause requires a strict elimination trial, not just switching to a different supermarket food. The trial must use a truly novel protein (one the dog has never eaten) or a hydrolysed diet, with absolutely nothing else for 8–12 weeks. Your vet or a veterinary nutritionist can guide this properly.
My Lab has had 4 ear infections this year — is that normal?
No — it’s common in Labs, but it’s not something you should just accept as inevitable. Four infections in a year means the underlying cause hasn’t been found or isn’t being managed. Ask your vet for a dermatology referral or a more thorough investigation. A veterinary dermatologist sees cases like this regularly and has tools beyond general practice for identifying and managing the root cause.
Once you know why, read about Labrador ear infection signs and safe home care. Swimming is one of the biggest recurring triggers — see our guide to Labrador skin problems after swimming. Recurring ear infections are more common in older Labs — make checks part of your senior Labrador care routine.
My Take on Why Does My Lab Keep Getting Ear Infections
Recurring ear infections in Labs are almost always a sign of an underlying cause that hasn’t been identified. Treating the infection without addressing why it keeps coming back is like bailing a leaking boat without finding the hole. Allergies — both environmental and dietary — are the most common underlying driver. A vet who takes recurring ear infections seriously and investigates for allergy is doing the right thing. One who just prescribes ear drops for the fifth time without asking why it keeps happening is not getting to the root of the problem.
FAQ
What’s the most common cause of recurring ear infections in Labs?
Allergy — either environmental (grass pollen, dust mites, moulds) or dietary. Allergies cause inflammation in the ear canal that creates the conditions for bacterial and yeast overgrowth. Until the allergy is managed, infections tend to recur regardless of how well individual episodes are treated.
Should I ask my vet about allergy testing for recurring ear infections?
Yes. If your Lab has had three or more ear infections, asking specifically about underlying allergy assessment is worthwhile. Intradermal allergy testing or referral to a veterinary dermatologist may be appropriate, depending on severity.
Can diet changes help with recurring ear infections in Labs?
Sometimes. If food allergy is contributing, an elimination trial (8–12 weeks on a novel protein diet) may reduce ear infection frequency. It’s a significant commitment but worth trying before moving to immunotherapy or long-term medication.