Ear Hematoma in Dogs: Causes and Treatment

By Tailwisp Editorial TeamUpdated October 17, 20263 min read

A puffed-up ear flap can look dramatic, but it is treatable.

What it is

An aural hematoma forms when small blood vessels in the ear flap break and blood collects between the skin and cartilage. It is often caused by vigorous head shaking or scratching, which happen when something irritates the ear.

Signs

• Swollen, soft, warm ear flap
• Head shaking or tilting
• Scratching at the ear
• Ear held lower because of weight
• Discomfort when touched

Underlying causes

Most hematomas happen because of an ear problem. Common triggers include dog ear infections, ear mites, allergies, foreign material and, less commonly, clotting problems. Treating only the swelling without the cause often leads to recurrence.

Floppy-eared breeds

Dogs with large, heavy ears may be more likely to develop hematomas. See grooming routine for floppy ear dogs.

Diagnosis

Your vet will examine the ear, check the canal and may take samples. They may also check for other conditions that affect clotting.

Treatment options

• Needle drainage: simple, but swelling often returns.
• Drain placement: a small drain or tube keeps the pocket open while it heals.
• Surgery: opens the hematoma and sutures the layers together to prevent refilling.
• Medical management: some cases are managed with medication.

Your vet will choose based on size, duration and your dog's health. All approaches should include treating the underlying cause.

Aftercare

Expect bandaging, a protective cone or pain relief. Keep the ear clean and dry, and follow instructions about medications and rechecks. See dog cone alternatives.

What if untreated

Some hematomas absorb over weeks, but the ear may become thickened and crumpled, sometimes called cauliflower ear. Pain and repeated head shaking can continue without treatment.

Prevention

1. Treat itchy ears promptly.
2. Clean as advised. See how to clean a dog's ears.
3. Manage allergies. See dog skin allergies.
4. Dry ears after swimming.
5. Schedule regular checks.

Cost and planning

Costs vary with method, clinic and region. Ask for an estimate, and ask about follow-up costs. See dog vet cost guide.

Common mistakes

• Waiting for it to resolve.
• Squeezing or lancing at home.
• Ignoring the cause.
• Skipping rechecks.

Troubleshooting

• The swelling returned: ask about a drain or surgery and treating the cause.
• My dog keeps shaking his head: schedule an ear exam.
• The ear looks crumpled: it may be scarring from an older hematoma.

A simple plan

1. See a vet promptly.
2. Treat the cause.
3. Protect the ear.
4. Recheck as advised.

Real-life examples

A spaniel shakes his head and develops a puffy ear, and a vet finds a yeast infection and treats both. A lab with allergies gets repeated swellings until his skin disease is managed. A terrier heals well after surgery and wears a cone for the recommended period. Cause and care matter.

Comfort and calm

Keep your dog calm during healing, and avoid rough play that could cause head shaking.

Questions to ask your vet

• Which procedure do you recommend, and why?
• What is the chance the swelling returns?
• How will you treat the underlying ear problem?
• How long will my dog need a cone or bandage?
• What signs of trouble should I watch for at home?

Writing questions down helps you make a calm decision.

Home care between visits

Keep the ear clean and dry, prevent scratching with a cone if advised, and give medications on schedule. Avoid pressing on the swelling. Note any discharge, odor or change in the size of the ear, and share these with your vet at rechecks.

The takeaway

A hematoma needs a vet visit and treatment of the cause to prevent repeat swelling and scarring.

This article is general educational information, not veterinary advice. Every dog is different. If your dog is unwell, or you are unsure about a symptom, diet change or medication, contact your veterinarian.