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Otitis Media (Middle Ear Infection) in Dogs

Occurrence: common
Location of disease: Head/Neck

Author: Dr. med. vet. Gisa Löwe | Last modified: 17.02.2026

When to visit the vet?

Non-urgent see a veterinarian within 2–3 days

If the condition worsens / symptoms persist, consult a veterinarian.

Definition

Otitis media, also known as middle ear infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease., is an inflammatory condition of the middle ear in dogs that can be caused by infections, injuries, or other factors.

BASICS/CAUSES:

The middle ear is the section of the ear located behind the eardrum. It contains small bones that transmit sound waves from the eardrum to the inner ear. In middle ear infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease., there is inflammation of this region, often associated with fluid accumulation.

The most common cause of otitis media in dogs is a bacterial infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease., which often occurs secondary to an infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease. of the external ear canal (otitis externa). These infections can be caused by various types of bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease., including staphylococci and pseudomonas.

Another possible cause is fungal infections, which can also migrate from the external ear canal to the middle ear. Injuries to the eardrum, caused by foreign bodies, traumas, or as a result of intensive cleaning, can also pave the way for pathogens into the middle ear.

Systemic diseases or allergies can also play a role in the development of otitis media, as they can weaken the dog’s immune systemThe immune system is the body's defense system against infectious agents such as bacteria, viruses, fungi, and parasites. It comprises a complex network of organs, cells, and molecules that work together to protect the body. and increase susceptibility to infections. In rare cases, Tumors or polyps in the ear area can lead to a blockage of the Eustachian tube, which can result in fluid accumulation in the middle ear and subsequent inflammation.

The most important facts at a glance

Otitis media in dogs is a middle ear infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease. often caused by infections from the external ear, foreign bodies or water in the ear, allergies, or anatomical peculiarities that hinder middle ear ventilation. The most common symptoms are Pain, Fever, Hearing loss, foul-smelling ear discharge, and Pain upon touching the ear. Dizziness and, less commonly, weakness and Balance disorders can also occur. DiagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. is made through a clinical examination, otoscopyOtoscopy is an examination of the ear canal and eardrum using an otoscope. It is performed to diagnose ear conditions, such as infections or foreign bodies., and possibly X-rayX-ray is an imaging technique that uses X-rays to create images of the inside of the body. It is often used to diagnose bone fractures, lung diseases, and other conditions. or CT scans. A culture of the ear discharge can help identify the pathogenA pathogen is a microorganism or virus that can cause disease in its host. Pathogens include bacteria, viruses, fungi, and parasites. and determine the correct antibiotic therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions.. Treatment depends on the cause and may include antibiotics, anti-inflammatory medications, or surgical interventions. Preventive measures include good ear hygiene and regular veterinary check-ups. Research focuses on the causes and treatment, including the development of new antibiotics and minimally invasiveInvasive describes medical procedures or pathogens that enter the body or penetrate tissue. In medicine, invasive procedures can range from minimally invasive techniques to open surgery. surgical techniques. A balanced diet and avoidance of allergens can also help. With early diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. and treatment, the prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. is generally good, but delays can lead to complications such as permanent Hearing loss.

Causes

Spread of an infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease. from the external ear.
PenetrationPenetration describes the entry or permeation of a substance or organism into a body or material. In medicine, it can refer to the penetration of microorganisms into tissues or the insertion of instruments into the body. of foreign bodies or water into the ear.
Allergies leading to inflammatory conditions.
Anatomical features that hinder ventilation of the middle ear.

Symptoms

Very common symptoms:

Common symptoms:

Dizziness

Rare symptoms:

A common symptom of otitis media in dogs is persistentPersistent means lasting or continuing for an extended period. In veterinary medicine, it can refer to chronic diseases or symptoms that do not subside. Head shaking or Scratching the ear. Dogs may also tilt their head to the side, especially on the affected side.

Another sign is pain sensitivity in the ear area, which can manifest as Sensitivity to touch or defensive behavior when attempting to examine the ear. Balance disorders or an unsteady gait can also indicate a middle ear infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease., as the middle ear is also responsible for balance.

There may be reduced hearing ability on the affected side. In some cases, a foul-smelling Discharge from the ear also occurs, which can indicate a bacterial infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease..

Severe cases can cause neurological symptoms such as nystagmus (uncontrolled eye movements) or facial paralysisParalysis is the complete loss of muscle activity in one or more areas of the body, which can lead to immobility and loss of sensation. Paralysis can be caused by injuries, illnesses, or disorders of the nervous system. if the infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease. spreads to adjacent structures.

Diagnosis

The diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. of otitis media often begins with a thorough clinical examination by the veterinarian, including a complete medical historyThe medical history is the systematic collection of a patient's medical history through questioning. It includes information about previous illnesses, treatments, allergies, and lifestyle habits. to record symptoms and potential triggers.

OtoscopyOtoscopy is an examination of the ear canal and eardrum using an otoscope. It is performed to diagnose ear conditions, such as infections or foreign bodies., where the ear is examined with a special instrument, is often the first step to assess the condition of the eardrum and external ear canal. The veterinarian will look for signs of redness, Swelling, or Discharge from the ear.

If the eardrum is intact, an X-rayX-ray is an imaging technique that uses X-rays to create images of the inside of the body. It is often used to diagnose bone fractures, lung diseases, and other conditions. or CT scan may be necessary to examine the middle ear more closely. These imaging techniques can help detect fluid accumulation, bone changes, or Tumors.

A culture and sensitivity test of samples from the ear may be performed to identify the exact pathogens and determine the most suitable antibiotic therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions.. If a systemic disease or allergyAn allergy is an overreaction of the immune system to a normally harmless substance, the allergen. The reaction can include symptoms such as skin rash, itching, sneezing, respiratory distress, or in severe cases, anaphylactic shock. is suspected, additional blood tests or allergyAn allergy is an overreaction of the immune system to a normally harmless substance, the allergen. The reaction can include symptoms such as skin rash, itching, sneezing, respiratory distress, or in severe cases, anaphylactic shock. tests may be required.

Therapy

The treatment of otitis media in dogs depends on the underlying cause. In most cases, antibiotic therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. is prescribed, tailored to the specific pathogenA pathogen is a microorganism or virus that can cause disease in its host. Pathogens include bacteria, viruses, fungi, and parasites. identified by culture. This therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. can last several weeks to ensure the infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease. is completely eliminated.

If fungal infections are the cause, antifungalAntifungal means effective against fungal infections. Antifungal medications are used to treat infections caused by fungi by inhibiting their growth or reproduction, or by killing them. medications are administered. In cases where a foreign body or a tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. is the cause, surgical intervention may be necessary to resolve the problem.

Anti-inflammatory medications may be prescribed to relieve Swelling and Pain. In some cases, a middle ear flush may also be necessary to remove excess fluid or pus.

TherapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. can be supplemented by regular follow-up examinations to monitor healing progress and adjust treatment as needed. Close collaboration with the veterinarian is crucial for the success of the treatment.

Prognosis and follow-up care

The prognosis for dogs with otitis media depends on the severity of the condition and the underlying cause. With early diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. and appropriate treatment, the prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. is generally good, and many dogs recover completely.

However, if the infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease. is severe or diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. and treatment are delayed, complications such as permanent Hearing loss or neurological damage may occur. In such cases, the prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. may be more guarded.

In the presence of Tumors or polyps, the prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. can vary depending on the type and spread of the Tumors. However, timely and targeted treatment generally improves the chances of a successful recovery.

Prevention

Preventive measures to avoid otitis media in dogs include good ear hygiene and regular check-ups by the veterinarian. Cleaning solutions specifically formulated for dog ears can help remove excessive earwax and dirt that could promote infections.

Regular ear examinations by the veterinarian can detect early signs of an infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease. before it develops into a middle ear infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease.. This is particularly important for dogs prone to ear infections, such as dogs with long, floppy ears or those with allergies.

Dogs should be protected from foreign bodies in the ear, for example, by not playing in areas with high grass seed growth. If signs of ear problems occur, a veterinarian should be consulted immediately to minimize the risk of the infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease. spreading to the middle ear.

Outlook on current research

Current research on otitis media in dogs focuses particularly on identifying the underlying causes and developing more effective treatment strategies. Advances in molecular diagnostics make it possible to identify specific types of bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease. and fungi that cause middle ear infections more quickly and precisely. This leads to more targeted treatment approaches that are better tailored to the individual needs of the dog.

Another focus of research is the investigation of genetic predispositions for the development of otitis media. Certain breeds are more susceptible to middle ear infections, which could indicate genetic factors. Researchers are working to identify the genetic markers associated with an increased risk for this condition. These findings could lead to preventive measures in the future to support particularly at-risk dogs early on.

The development of new antibiotics and antifungals is also an important area of research. As antibiotic resistanceResistance refers to the ability of microorganisms to withstand the effects of antibiotics, antifungals, or other antimicrobial drugs. Resistance can also refer to the body's ability to be insensitive to diseases or toxins. increases in bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease. that cause otitis media, scientists are looking for new classes of active ingredients that are more effective and gentler for the dog. The research into probiotic treatments that support the balance of the microflora in the ear is also considered a promising option.

In surgery, there are advances in minimally invasiveInvasive describes medical procedures or pathogens that enter the body or penetrate tissue. In medicine, invasive procedures can range from minimally invasive techniques to open surgery. techniques for treating chronicChronic refers to a condition or disease that is long-lasting or permanent. Chronic diseases often develop slowly and can lead to persistent or recurring health problems over time. middle ear infections. These procedures aim to shorten recovery time and minimize stressStress refers to the state of an organism reacting to external stimuli or demands. In veterinary medicine, stress can have physical or psychological effects on animals, impacting their health and well-being. for the dog. At the same time, work is being done to improve imaging diagnostics to allow for a more accurate assessment of the severity of the inflammatory conditions.

In addition, the effects of nutrition on ear canal health are being investigated. Some studies suggest that a balanced diet can strengthen the immune systemThe immune system is the body's defense system against infectious agents such as bacteria, viruses, fungi, and parasites. It comprises a complex network of organs, cells, and molecules that work together to protect the body. and reduce susceptibility to infections. Omega-3 fatty acids and other dietary supplements are being examined for their potential anti-inflammatory effects, promising long-term benefits for dogs with recurrentRecurrent refers to a disease that repeatedly returns or worsens after a temporary remission or improvement. middle ear infections.

Finally, the role of environmental management in the preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. and treatment of otitis media is being explored. This includes measures to improve indoor air quality, avoid allergens, and regular cleaning of the ear canal. These holistic approaches, in combination with medical treatments, could significantly improve the quality of life for dogs with middle ear infections.

Frequently asked questions (FAQs)

What is otitis media in dogs?

Otitis media is an inflammatory condition of the middle ear that can be caused in dogs by various factors such as infections, allergies, or foreign bodies. It can cause Pain, Head shaking, and Balance disorders. -

How do I know if my dog has a middle ear infection?

Signs of middle ear infection in dogs include frequent Head shaking, Scratching ears, unpleasant odor from the ear, Balance disorders, and in severe cases, Hearing loss. If you notice these symptoms, you should consult a veterinarian immediately. -

What causes otitis media in dogs?

Common causes include bacterial or fungal infections, allergies, parasites, and foreign bodies in the ear. Anatomical peculiarities, such as narrow ear canals, can also increase the risk. -

How is otitis media treated?

Treatment depends on the cause of the inflammatory conditions. It may include the administration of antibiotics or antifungals, the removal of foreign bodies, or the treatment of allergies. In severe cases, surgical intervention may be necessary. -

Can I treat otitis media in my dog at home?

Self-treatment is not recommended, as correct diagnosis and treatment are crucial. Incorrect treatments can make the situation worse. A veterinary visit is essential. -

Is otitis media contagious in dogs?

Otitis media itself is not contagious, but the bacteria or fungi that cause the inflammatory conditions can spread under certain conditions. Good hygiene and regular ear checks can help prevent this. -

How can I prevent otitis media in my dog?

Regular ear cleaning, avoidance of allergens, and a balanced diet can help reduce the risk. Especially for dogs prone to ear infections, regular check-ups by the veterinarian are important. -

Which dogs are most often affected by otitis media?

Dogs with long, floppy ears such as Cocker Spaniels or Basset Hounds, as well as breeds with narrow ear canals, are more frequently affected. Dogs with allergies also have an increased risk. -

Can a middle ear infection lead to Taubheit?

Yes, untreated or chronic middle ear infections can lead to permanent hearing damage and, in severe cases, Hearing loss. Early treatment is therefore crucial. -

How long does the treatment for otitis media in dogs last?

The duration of treatment depends on the severity of the inflammatory conditions and the cause. Typically, treatment can last several weeks; in chronic cases, long-term therapy may be required.