Why Does My Dog Keep Getting Itchy Ears?

Head shaking, ear scratching and that familiar “yeasty” smell are common reasons owners start worrying about their dog's ears.

Sometimes the problem is short-lived.

But when itchy or smelly ears keep coming back, there is often more going on than simple dirt.

The ear canal has its own delicate skin environment and its own microbial community.

Yeasts such as Malassezia can normally be present in small numbers, but changes in moisture, inflammation, skin barrier function or underlying allergy can create conditions that allow them to multiply.

Dogs with recurrent ear problems may also have itchy paws or skin elsewhere.

And because the gut, immune system and skin are connected through nutritional, immune and microbial pathways, recurrent ear irritation can sometimes be part of a wider picture rather than an isolated ear problem.

Several factors can contribute to recurrent itchy ears.

Yeast overgrowth

Malassezia can multiply in an inflamed or moist ear canal and contribute to itching and odour.

Bacterial overgrowth

Bacteria can also become involved, either alone or alongside yeast.

Allergy

Environmental and dietary allergies are common underlying contributors to recurrent ear inflammation.

Moisture

Swimming, bathing or persistently damp ears can alter the local environment.

Ear shape and anatomy

Some dogs naturally have narrower, hairier or less well-ventilated ear canals.

Ear mites

These are more common in some dogs, particularly younger animals.

Skin barrier problems

Dogs with wider skin issues may also develop recurrent ear irritation.

Paw and skin irritation

Dogs with itchy ears often also lick or chew their paws or scratch elsewhere.

Wider gut and immune health

The gut, immune system and skin communicate with one another, so recurrent skin and ear problems may sometimes occur alongside digestive or microbiome changes.

That does not mean itchy ears are “caused by the gut”, but it is one reason the whole dog matters.

Avoid repeatedly cleaning or treating itchy ears without understanding what is causing the irritation.

Some dogs benefit from routine ear cleaning, but too much cleaning can itself irritate the ear canal.

Keep ears reasonably dry after bathing or swimming.

Do not use human ear treatments or leftover veterinary medication without advice.

If the problem keeps returning, it is worth looking beyond the ear itself.

Consider:

• paw licking
• skin redness
• coat changes
• seasonality
• food changes
• stool quality
• gas
• appetite

Recurring ear problems are often more useful to think of as a pattern than as a series of completely separate infections.

If ear irritation occurs alongside wider skin changes, our guide to food and itchy skin explains how a possible dietary link can be investigated.

For the wider nutritional context of skin concerns, read our guide to gut health and itchy skin.