Why Is My Dog Scratching Its Ears? Causes, Home Care, and When to See a Vet

Excessive ear scratching in dogs can come from allergies, infections, ear mites, or foreign bodies. This guide helps owners decide when to watch, treat at home, or see a vet.

Why dogs scratch their ears

Ear scratching is a common sign that something is irritating your dog’s ears. Causes range from mild and temporary (like a bit of pollen) to painful and urgent (like a foreign body or a severe ear infection). This guide explains the most likely causes, how to safely manage minor problems at home, and clear decision steps for when to get veterinary help.

Sources used in this article include the Merck Veterinary Manual and standard veterinary dermatology texts (e.g., Miller & Griffin), which inform the descriptions and care guidance below (Merck Vet Manual).

Differential diagnosis — common causes (ranked by likelihood)

How to check your dog safely at home (what to look for)

Do a calm, gentle check — don’t force your dog’s head or attempt deep inspection if the dog resists.

• Smell: Is there a foul or yeasty odor? That often points to infection.
• Discharge: Note color/consistency. Dark brown/black crumbly material may indicate ear mites. Yellow/green or brown sticky discharge suggests infection.
• Redness/swelling: Look at the outer ear (pinna) and as far into the vertical ear canal as you can see.
• Pain or flinching: Does your dog pull away, cry, or show intense pain when you touch the ear?
• Head tilt / neurologic signs: Is the dog tilting its head, losing balance, or showing facial droop?

Home care steps for mild cases (safe, short-term measures)

Important: Home care is intended only for mild, short-lived symptoms (light scratching for a day or two, no pain, no facial or neurologic signs). Never attempt to treat suspected severe infections, deep foreign bodies, or neurologic problems at home.

When in doubt, contact your veterinarian for advice before attempting any cleaning or topical treatment.

When to see a vet — decision framework

Use this three-tier approach to decide how urgent veterinary assessment should be:

• Immediate (go to vet now)

• Urgent (see vet within 24–48 hours)

• Watch-and-wait at home (monitor closely)

What your veterinarian will likely do

At the clinic the vet will perform a full physical exam and focused ear exam, possibly including:

• Otoscopic exam to look into the vertical and horizontal ear canals
• Cytology (microscopic exam of ear debris) to identify bacteria, yeast or mites
• Ear swabs and culture in recurrent or resistant cases
• Sedation or anesthesia for painful/advanced cases or to remove foreign bodies
• Imaging (x-ray or CT) or myringotomy if middle/inner ear disease is suspected

Specific causes and what to expect

Allergies

• Often cause chronic, recurrent ear problems. Management focuses on identifying allergens (environmental/food), controlling inflammation (steroids, immunotherapy), and treating secondary infections.

• Usually treated with topical antimicrobials and anti-inflammatory drugs; severe cases may need systemic antibiotics and cleaning under sedation.

• Diagnosed by cytology or visible debris; treated with prescribed acaricidal medications. Close contact pets should also be checked.

• Often cause sudden, focal pain and persistent scratching. Removal may require sedation and careful extraction by a vet. If the foreign body has migrated into middle ear or wound, surgery might be necessary.

• Require otoscopic exam and sometimes biopsy. Treatment ranges from surgical removal to medical management depending on diagnosis.

• More serious; may cause head tilt, incoordination or facial nerve deficits. Often requires imaging and systemic treatment; sometimes surgery.

Red Flags — Seek Emergency Care

• Intense pain, continuous shaking or pawing at the ear
• Profuse bleeding from the ear canal
• Sudden onset of head tilt, circling, collapse, facial droop, vision loss, or seizures
• Signs of systemic illness: high fever, weakness, refusal to eat
• A visible object deeply lodged in the ear that you cannot remove safely

Prevention and long-term management

• Regular ear checks and cleaning as advised by your veterinarian for at-risk breeds (floppy ears, heavy hair in canal)
• Keep ears dry after swimming/bathing. Use vet-recommended drying ear products if your dog swims frequently.
• Manage allergies through environmental control, diet trials, or immunotherapy where indicated
• Grooming: plucking ear hair only when recommended by your vet or groomer (controversial and breed-dependent)

Never do at home

• Do not insert cotton swabs or probes into the ear canal
• Do not apply prescription ear medications without veterinary guidance
• Do not forcefully remove a deeply lodged foreign body yourself

When to See a Vet Immediately

If your dog has severe ear pain, is bleeding from the ear, has neurologic signs (head tilt, circling, facial droop), or a visible foreign body you cannot safely remove, seek emergency veterinary care now. These signs may indicate deep infection, foreign body migration, or damage to the middle/inner ear and require prompt professional treatment.

Key Takeaways

• Excessive ear scratching in dogs is commonly caused by otitis (bacterial or yeast), allergies, ear mites, or foreign bodies like grass awns.
• Mild, short-lived scratching without pain or discharge can sometimes be observed for 48–72 hours with gentle care; persistent or worsening signs require veterinary assessment.
• Never probe an ear canal, use unprescribed medications, or attempt to remove deeply lodged foreign bodies at home.
• Seek immediate vet care for severe pain, bleeding, neurologic signs, or systemic illness.

• Merck Veterinary Manual: Otitis in Dogs. https://www.merckvetmanual.com/ear,-nose,-and-throat/otitis/overview-of-otitis-in-dogs
• Miller, W.H., Griffin, C.E., & Campbell, K.L. Small Animal Dermatology (standard veterinary dermatology reference)

Frequently Asked Questions