Ear Infections in Dogs (Otitis)

A caring veterinarian gently examines a dog's ear for signs of infection, ensuring the pet's health and comfort. Hilltop / Dog Health / Skin / Ear Infection

Understanding Causes, Symptoms, and Treatment

Ear infections are one of the most common health problems seen in dogs. In veterinary medicine, most ear infections affecting the outer ear canal are called otitis externa.

Dogs with ear infections often experience discomfort, itching, and inflammation of the ear canal. If left untreated, ear infections can become chronic and may lead to more serious ear disease.

Early diagnosis and proper treatment are important to prevent long-term damage to the ear.

What Causes Ear Infections in Dogs?

Allergies

Allergies are one of the most common underlying causes of ear infections in dogs. Dogs with environmental allergies or food allergies often develop inflammation of the skin, including the ear canal.

When the ear becomes inflamed, it creates an environment where bacteria and yeast can easily grow.

Dogs with allergic skin disease may develop repeated ear infections throughout their lives.

Yeast Infections

Yeast organisms naturally live on the skin and in the ear canal, but they can multiply excessively when the environment becomes warm and inflamed.

Yeast infections often cause:

• intense itching

• greasy discharge

• a strong odor from the ear

• redness and irritation

Yeast infections frequently occur secondary to allergies.

Bacterial Infections

Bacteria can also infect the ear canal, especially when inflammation is already present.

Bacterial ear infections may cause:

• pain

• swelling of the ear canal

• discharge from the ear

• increased odor

In some cases, bacteria and yeast infections occur together.

Ear Anatomy

Certain dog breeds are more prone to ear infections because of their ear shape.

Dogs with long, floppy ears or narrow ear canals may have reduced air circulation in the ears, which creates a moist environment that favors infection.

Breeds commonly affected include:

• Cocker Spaniels

• Basset Hounds

• Labrador Retrievers

• Golden Retrievers

Moisture and Water Exposure

Moisture in the ears can increase the risk of infection.

Dogs that swim frequently or are bathed often may develop ear infections if moisture remains trapped inside the ear canal.

Signs of Ear Infections in Dogs

Dogs with ear infections often show clear signs of discomfort.

Common symptoms include:

• shaking the head

• scratching at the ears

• redness inside the ear

• discharge from the ear

• unpleasant odor from the ear

• sensitivity when the ear is touched

Some dogs may also develop balance problems or pain if the infection becomes severe.

Why Ear Infections Should Be Treated Early

Ear infections rarely resolve on their own and often worsen without treatment.

Chronic or untreated ear infections can lead to:

• thickening of the ear canal

• narrowing of the ear canal

• damage to the eardrum

• middle ear infections

These complications can make treatment much more difficult.

How Veterinarians Diagnose Ear Infections

Veterinarians diagnose ear infections by performing a detailed examination of the ear canal.

Diagnostic steps may include:

• examining the ear with an otoscope

• collecting samples of ear debris

• microscopic examination to identify bacteria or yeast

This process helps determine the best treatment for the specific infection.

Treatment for Ear Infections

Treatment depends on the cause and severity of the infection.

Common treatments include:

• medicated ear drops

• ear cleaning solutions

• medications to control inflammation

• treatment for underlying allergies

In severe or chronic cases, additional tests or long-term management may be required.

Preventing Ear Infections

Some dogs are more prone to ear infections than others, especially those with allergies.

Preventive measures may include:

• regular ear cleaning when recommended by your veterinarian

• managing underlying allergies

• keeping ears dry after swimming or bathing

• routine veterinary checkups

Early detection and treatment can help prevent chronic ear disease.

Ear Infection Treatment in Kalamunda

If your dog is shaking their head, scratching their ears, or showing signs of discomfort, they may have an ear infection.

The team at Hilltop Veterinary Hospital in Kalamunda can examine your dog’s ears, identify the cause of infection, and recommend appropriate treatment.

Prompt treatment can help relieve your dog’s discomfort and prevent long-term ear problems.

Concerned About Your Dog’s Ears?

If your dog has signs of ear irritation, discharge, or persistent scratching, book a consultation with Hilltop Veterinary Hospital so our veterinary team can evaluate your dog’s ears and provide the right treatment.

Explore More Pet Health Advice

For more veterinary advice on skin disease, parasites, and preventative care, explore our Pet Health Advice library.

You can also browse our Dog Health Care articles to learn more about allergies, itching, flea control, and other common skin conditions.

The information provided in this article is intended for general educational purposes only and should not replace professional veterinary advice. Every dog’s health situation is unique. If your dog shows signs of ear infection or discomfort, consult your veterinarian for a proper diagnosis and personalised treatment plan.