Dog Ear Infection with Pain: How to Tell and What to Do

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-08-14

Key Takeaways

• Ear pain in dogs is most commonly caused by otitis externa, an inflammation of the outer ear canal, often due to bacterial or yeast overgrowth in warm, moist environments.
• Emergency signs indicating potential spread to the inner ear or nervous system include inability to stand, vomiting, circling, drooping facial nerves, or constant head tilt with stumbling.
• Diagnostic evaluation by a veterinarian is crucial, involving otoscopic examination, cytology of ear discharge to identify causative agents (bacteria, yeast), and potentially culture and sensitivity testing for targeted antimicrobial therapy.
• Home treatment with over-the-counter cleaners, human pain medications (e.g., ibuprofen, acetaminophen), or unprescribed remedies is contraindicated due to risks of exacerbating pain, causing toxicity, or damaging the eardrum.
• Recurrent ear infections often stem from underlying causes such as allergies (food or environmental), anatomical factors (narrow ear canals), or foreign bodies, necessitating identification and management of the root cause for long-term resolution.
• Prompt veterinary intervention is essential, as delaying treatment can worsen pain, prolong recovery, and increase the risk of complications like middle or inner ear infections.

If your dog is shaking their head, pawing at an ear, or crying out when you touch their head, they are telling you something hurts. Ear pain in dogs is most often caused by an infection, and the sooner you act, the sooner your dog gets relief. Do not try to clean the ear or give any medication before a veterinarian has examined your dog. Putting the wrong product into an infected ear can cause more pain or damage the eardrum.

Most ear infections in dogs are treatable and not life-threatening, but a small number become serious quickly. If your dog cannot stand, is vomiting, has a drooping face, or tilts their head constantly and cannot walk straight, that is an emergency. Those signs can mean the infection has spread deeper into the ear or the nervous system. Go to an emergency veterinarian immediately.

For everything else, call your regular veterinarian today. Ear infections rarely resolve on their own, and waiting often makes the pain worse and the treatment longer.

Is This an Emergency?

Use this table to decide how fast to act. When in doubt, call a veterinarian. They can hear your dog's history and tell you whether to come in now or later.

{
 "type": "triage",
 "title": "Urgency triage by severity of signs",
 "tiers": [
  {
   "tier": "danger",
   "label": "Emergency, go now",
   "signs": [
    "Cannot stand or walk normally, constant head tilt with stumbling, vomiting, circling in one direction, drooping on one side of the face, red or bulging eyeball, or sudden deafness"
   ],
   "action": [
    "Go to an emergency veterinary clinic immediately",
    "These signs can mean the infection has spread to the inner ear or brain"
   ]
  },
  {
   "tier": "warn",
   "label": "Same-day appointment",
   "signs": [
    "Head shaking, pawing at the ear, whining when the ear is touched, red or swollen ear flap, brown or yellow discharge, bad smell from the ear, or holding the head to one side"
   ],
   "action": [
    "Call your regular veterinarian this morning and book an appointment for today",
    "Ear infections are painful and need treatment within hours, not days"
   ]
  },
  {
   "tier": "safe",
   "label": "Watch at home for 24 hours",
   "signs": [
    "Mild head shaking after swimming or bathing, with no pain, no odor, and no discharge"
   ],
   "action": [
    "Dry the outer ear gently with a soft towel",
    "Do not put anything inside the ear canal",
    "If shaking continues past 24 hours or any new sign appears, book a veterinary visit"
   ]
  }
 ]
}

What Is Most Likely Going On

The most common cause of ear pain in dogs is otitis externa, which means inflammation of the outer ear canal. The ear canal becomes red, swollen, and tender. Bacteria and yeast that normally live in small numbers can overgrow when the ear stays warm and moist, and that overgrowth causes infection.

You can often see the signs. The inside of the ear flap may look pink or bright red instead of pale. There may be dark brown wax, yellow pus, or a greasy discharge. The ear may smell sour or musty. Your dog may tilt their head to the painful side or yelp when you try to look inside.

Dogs with floppy ears, such as Cocker Spaniels and Labradors, get ear infections more often because their ear flaps trap moisture. Dogs that swim frequently are also at higher risk. The American Veterinary Medical Association explains that routine ear checks and keeping ears dry are part of basic preventive care for dogs prone to ear problems.

What Else Could Be Causing the Pain

Ear pain is not always an infection. A foreign object, such as a grass seed or foxtail, can lodge in the ear canal and cause intense discomfort. A dog with a foreign body will often shake their head violently and paw at the ear as if trying to remove something.

Allergies are another common cause. Many dogs with food allergies or environmental allergies develop itchy, inflamed ears as their first sign. The inflammation creates the perfect conditions for a secondary infection to start. The World Small Animal Veterinary Association notes that allergic skin disease frequently affects the ears and that managing the underlying allergy is key to preventing repeat infections.

Less common causes include ear mites, which are tiny parasites that cause intense itching, and polyps or growths inside the ear canal. Ear mites are more common in puppies than in adult dogs. Growths are more common in older dogs. A veterinarian can look deep into the ear with an otoscope, a lighted instrument, to see what is actually there.

Why You Should Not Treat This at Home

You might be tempted to use an over-the-counter ear cleaner or a home remedy like vinegar or alcohol. Do not do this. If your dog's eardrum is already damaged, certain liquids can enter the middle ear and cause severe pain, dizziness, or permanent hearing loss.

You also cannot know whether the infection is bacterial, fungal, or both without a microscope. A veterinarian will take a swab of the ear discharge and look at it under a microscope to identify the cause. That test guides the choice of medication. Using the wrong treatment can make the infection worse or create resistant bacteria.

Pain relief is important, but you should never give your dog a human painkiller. Medications like ibuprofen and acetaminophen are toxic to dogs. The American Animal Hospital Association emphasizes that pain management in pets should always be directed by a veterinarian, who can prescribe a safe medication at the correct dose for your dog's weight and health status.

What the Veterinarian Will Do

Your veterinarian will start by examining both ears, even if only one seems painful. They will look at the ear canal and check whether the eardrum is intact. They may take a swab for microscopic examination and sometimes a culture to identify the exact bacteria.

Treatment usually involves a medicated ear cleaner and prescription ear drops. In severe cases, your dog may need oral medication or a sedated deep cleaning of the ear canal. The MSD Veterinary Manual describes ear infections as conditions that often require follow-up visits to confirm the infection has fully cleared, also improved.

Your veterinarian will tell you exactly how to apply the medication and how often to return for rechecks. Follow those instructions completely, even if your dog seems better after a few days. Stopping treatment early is one of the most common reasons ear infections come back.

What You Can Do Right Now at Home

If your dog is showing signs of ear pain but is otherwise stable, eating, drinking, and not showing any emergency signs, you can take a few safe steps while you arrange a veterinary visit.

Safe steps you can take:

• Keep your dog calm and quiet. Pain makes most dogs anxious, and a quiet space helps.
• Stop any scratching or head shaking by using an Elizabethan collar, often called an E-collar or cone. Your vet can fit one, or you can use a temporary one from a pet store. This prevents your dog from making the ear worse.
• Do not clean the ear yourself. Do not put any drops, oils, vinegar, alcohol, or cotton swabs into the ear canal. These can damage the eardrum or push debris deeper.
• Do not give any human pain medication. Drugs like ibuprofen, acetaminophen, or aspirin can be toxic to dogs. Even medications made for dogs can cause harm if the dose is wrong or the eardrum is ruptured.
• Do not apply heat or cold packs to the ear. You cannot tell if the pain comes from infection, a foreign body, or a deeper problem, and temperature changes can mask signs your vet needs to see.

What you must not do:

• Never stick anything into the ear canal. A cotton swab can push wax and infection deeper and can rupture the eardrum.
• Never give leftover antibiotics or ear drops from a previous illness. The infection may be caused by a different organizm, and the wrong medication can make things worse.
• Never wait more than 24 hours if your dog is in obvious pain, refusing food, or crying out when touched.

What to Write Down Before You Call the Vet

Having clear information ready helps your vet give better advice and can save time. Write down the following:

• When the signs started. Was it yesterday, three days ago, or a week ago?
• How often your dog shakes their head or scratches the ear. Count the episodes in one hour.
• What the ear looks like. Is there redness, swelling, discharge, or a smell? What color is the discharge?
• Whether your dog flinches, yelps, or pulls away when you gently touch the base of the ear.
• Whether your dog has had ear problems before, and what treatment was used.
• Any recent swimming, bathing, or time in tall grass or brush.
• What your dog eats, and whether they have allergies or skin issues.

Pain Assessment Checklist

Use this simple checklist to describe your dog's pain level to your vet. Score each item from 0 to 3, where 0 means normal and 3 means severe.

Add up the scores. A total of 0 to 3 suggests mild discomfort. A total of 4 to 8 suggests moderate pain that should be seen within 24 hours. A total of 9 or higher, or a score of 3 in any single category, means your dog needs veterinary attention as soon as possible.

What the Veterinary Visit Usually Involves

Your vet will start by asking the questions you prepared answers for. They will then examine both ears, also the painful one, because ear problems often affect both sides.

The vet will look into the ear canal with an otoscope, a tool with a light and a magnifying lens. This lets them see the eardrum and check for foreign bodies, polyps, or tumors. If the ear is too painful or swollen to examine fully, your vet may recommend sedation. This is common and safe, and it allows a thorough examination without causing your dog more distress.

Your vet will likely take a sample of the discharge from the ear and look at it under a microscope. This is called cytology. It shows whether the infection is caused by bacteria, yeast, or both, and helps guide the choice of medication. In some cases, your vet may recommend a culture, where the sample is sent to a laboratory to identify the exact bacteria and test which antibiotics will work best.

Treatment usually involves a professional ear cleaning at the clinic, followed by prescription ear drops or ointment. Your vet may also prescribe oral medication for pain or inflammation. The dose must come from your veterinarian because it depends on your dog's weight, health status, and the specific medication chosen. Giving the wrong dose can cause serious side effects, and some ear medications can be harmful if the eardrum is ruptured.

Most dogs improve within a few days of starting treatment, but the full course must be finished even if your dog seems better. Stopping early can lead to a resistant infection.

What Drives the Cost Up or Down

Costs vary widely by region and clinic, so treat these as general ranges only. A simple first-time ear infection with a basic examination and ear drops might cost roughly $100 to $250. If sedation, a thorough ear flush, cytology, and oral medications are needed, the cost can range from $250 to $600. Cases that require a culture, imaging, or referral to a specialist can cost more.

The biggest cost drivers are sedation, the need for a deep ear flush, and whether a culture is required. Chronic or recurrent infections often need more testing to find the underlying cause, which increases the cost. Ask your vet for an estimate before treatment begins, and ask about payment options if cost is a concern. The American Animal Hospital Association provides guidance on what to expect during veterinary visits and how to discuss costs with your clinic.

When an Online Vet Can Help, and When It Cannot

Any situation in this article that involves severe pain, a suspected ruptured eardrum, bleeding from the ear, sudden head tilt, loss of balance, or a dog that refuses to eat requires hands-on care. These must not be handled remotely. An online vet cannot see inside the ear canal, cannot check the eardrum, and cannot safely prescribe ear medication without knowing that the eardrum is intact.

A remote consultation is genuinely useful for early or mild signs, such as occasional head shaking with no discharge or odor. It is also helpful for a recheck on a known problem, a question about whether a sign warrants a visit, a medication side effect question, or a follow-up on a chronic condition.

A remote vet can take a history, look at visible signs on video, advise you, and in many states prescribe medication. They cannot palpate the ear base, take your dog's temperature, run bloodwork, or image the ear. Prescribing rules differ by state, and a veterinarian may require an in-person examination before prescribing. The American Veterinary Medical Association offers guidance on how to work with your veterinarian and understand the limits of remote care.

When to Recheck

Your vet will likely want to see your dog again after treatment to confirm the infection has cleared. This is especially important for chronic or recurrent ear problems. The MSD Veterinary Manual notes that ear infections often return if the underlying cause, such as allergies or a narrow ear canal, is not addressed. A recheck examination is the only reliable way to know the infection is truly gone.

Common Mistakes Owners Make

Many well-meaning owners delay healing by doing things that seem helpful but are not. Knowing these pitfalls can save your dog pain and save you money.

Mistake: Cleaning the ears with cotton swabs. Swabs push debris and wax deeper into the ear canal. They can also injure the delicate lining of the ear. Use only cotton balls or gauze on your fingertip, and only clean what you can see. Never insert anything into the vertical canal.

Mistake: Using leftover medication from a previous infection. Old drops may be expired, may be the wrong drug for this infection, or may have been meant for a different ear. Using them can mask symptoms while the infection worsens underneath. Throw away unused ear medications after treatment ends.

Mistake: Stopping treatment early because the ear looks better. The visible part of the ear can look normal while infection remains deep in the canal. Stopping drops or tablets early is a leading cause of repeat infections. Finish every dose exactly as prescribed.

Mistake: Assuming a painful ear is always an infection. Foreign bodies like grass awns, tumors, or a ruptured eardrum can cause identical signs. Treating for infection when the problem is something else wastes time and can cause harm.

How to Reduce the Chance of It Happening Again

Recurrent ear infections are frustrating, but many are preventable. The key is understanding why your dog's ears get infected in the first place.

Keep ears dry. Moisture is a breeding ground for yeast and bacteria. After swimming or bathing, dry your dog's ears gently with a cotton ball. Do not use a hair dryer near the head.

Address allergies. In many dogs, ear infections are a symptom of underlying allergies to food or environmental triggers. The World Small Animal Veterinary Association highlights allergic skin disease as a common driver of recurrent ear problems. If your dog has repeated infections, ask your veterinarian about allergy testing or a food trial.

Check ears weekly. Make it part of your routine, like brushing teeth. Look for redness, odor, or discharge before your dog starts shaking their head. Catching problems early means shorter, cheaper treatment.

Use preventive cleaners only if recommended. Some dogs benefit from regular use of a veterinary ear cleaner. Do not start one on your own. The wrong cleaner can irritate an already sensitive ear. Ask your veterinarian which product suits your dog.

What Recovery and Ongoing Management Look Like

Most uncomplicated ear infections improve within 7 to 14 days of treatment. Your dog should show less pain and head shaking within 48 to 72 hours. If there is no improvement in that window, call your veterinarian. The infection may need a different medication, or the diagnosis may need revisiting.

Some infections take longer. Chronic cases, infections with resistant bacteria, or ears with severe swelling may need several weeks of treatment. Your veterinarian may recommend a recheck visit to look deep into the ear and confirm the infection has cleared. This step matters. An ear that looks healed on the outside can still harbor infection.

During recovery, keep your dog from scratching their ears. An Elizabethan collar, often called an e-collar or cone, may be necessary for a few days. Scratching can create hematomas, which are blood-filled swellings of the ear flap that require their own surgery.

For dogs with chronic ear disease, management is ongoing. You may need to learn to clean ears at home, give regular medications, and manage allergies long term. The American Animal Hospital Association provides guidance on working with your veterinarian to manage chronic conditions. This is not a failure. It is simply how some dogs stay comfortable.

Frequently Asked Questions

Can I give my dog human pain medication for an ear infection? No. Never give human pain relievers like ibuprofen, acetaminophen, or naproxen to a dog. These drugs can be toxic and even fatal. Some human medications are safe for dogs in specific doses, but only a veterinarian can determine that. The dose depends on your dog's weight, health status, and the medication itself. Giving the wrong drug or dose can cause kidney failure, liver damage, or stomach ulcers. If your dog is in pain, call your veterinarian for safe options.

How do I know if my dog's eardrum is ruptured? You cannot tell from the outside. A ruptured eardrum requires an otoscope examination by a veterinarian. This matters because some ear medications are toxic to the middle ear and must not be used if the eardrum is damaged. Never put any drops into your dog's ear without a veterinary exam first. If your dog tilts their head, has discharge, or seems dizzy or off balance, these can be signs of a deeper problem.

Why does my dog keep getting ear infections? Recurrent infections usually have an underlying cause. The most common is allergies, either to food or to things in the environment like pollen or dust mites. Other causes include ear anatomy, such as narrow or hairy ear canals, hormonal conditions, or foreign bodies. Your veterinarian may recommend allergy testing, a food trial, or imaging to find the root cause. Treating only the infection without addressing the cause leads to repeat cycles.

Is it safe to use vinegar or alcohol to clean my dog's ears? No. Vinegar and alcohol can sting inflamed tissue and make the pain worse. Alcohol can also dry out the ear lining, and vinegar changes the natural pH in ways that may worsen certain infections. If the eardrum is ruptured, these liquids can cause severe pain and damage to the middle ear. Use only products your veterinarian has recommended for your dog's specific situation.

How long will my dog need to wear a cone? Usually 5 to 7 days, or until the ear stops being itchy and painful. The cone prevents scratching, which can tear the ear flap or introduce more bacteria. Some dogs tolerate the cone well and can eat, drink, and sleep normally with it on. If your dog seems distressed, ask your veterinarian about alternative options like inflatable collars. Do not remove the cone early just because your dog looks uncomfortable.

What happens if I ignore a mild ear infection? A mild infection can become severe. The inflammation can spread deeper into the ear, causing a middle or inner ear infection. Signs of this include head tilt, circling, loss of balance, and facial nerve paralysis. These conditions are painful and much harder to treat. The American Veterinary Medical Association advises seeking veterinary care early for signs of illness. Treating early is faster, cheaper, and far more comfortable for your dog.

Related Clinical & Scientific Guides

• Dog Ear Infection with Discharge: What the Color Tells You
• Cat Prednisolone for Allergies: Side Effects and Safe Use
• Dog Hair Loss on Nose: Causes and When to Worry

References and Further Reading

• WSAVA Global Dermatology Resources
• AVMA Pet Owner Resources
• MSD Veterinary Manual Pet Owner Version
• AAHA Pet Owner Resources

Related Articles

• Dog Ear Infection with Redness: What to Do
• Dog Ear Infection with Green Discharge: What to Do
• Dog Ear Infection or Ear Mites? How to Tell
• Dog Ear Infection with Blood: Is It an Emergency?
• Dog Ear Infection with Itching: How to Stop the Scratching

This article is general educational information for pet owners. It is not a substitute for veterinary diagnosis, examination, or treatment. If your pet is showing severe or rapidly worsening signs, contact an emergency veterinary hospital immediately.