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Scales at Ear Margins in Dogs

Author: Dr. med. vet. Gisa Löwe | Last modified: 20.02.2026

When to visit the vet?

Non-urgent see a veterinarian within 2–3 days

RED for severe fissures/bleeding, pronounced swelling, severe pain, or systemic signs.

Unsure about what’s wrong with your pet? Feel free to use our Symptom Checker for more clarity

Definition

Scales at ear margins in dogs are accumulations of dead skin cells that appear as dry, flaky deposits along the edges of the dog’s ears. This symptom may indicate various skin conditions or systemic issues.

Can Occur with the Following Diseases:

Ear Margin Dermatosis (Ear Edge Ulcer)

Basics and possible causes

A dog’s skin is constantly renewing itself, with dead cells migrating to the surface and being shed. When this process is disrupted, scales can form. The ear margins are particularly susceptible because the skin there is thin and sensitive.

A common cause of scaling at ear margins is dry skin, which can be caused by environmental factors such as low humidity or frequent bathing without adequate moisturizing. Nutritional deficiencies, especially a lack of essential fatty acids, can also affect skin health and lead to scaling.

Allergies are another possible cause. Dogs can be allergic to various substances, including pollen, dust mites, or certain food ingredients. An allergic reaction can lead to itching, inflammatory conditions, and scaling.

Parasites such as mites, especially the ear mite (Otodectes cynotis), can also cause scales and other skin changes. These mites are highly contagiousContagious means infectious. Diseases that can easily be transmitted from one animal to another or from animals to humans are referred to as contagious. and can cause significant discomfort.

Infections, both bacterial and fungal, can also irritate the skin at the ear margin and contribute to scaling. A disrupted skin barrier can facilitate the 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 microorganisms, which can lead to inflammatory conditions and scaling.

Autoimmune diseasesAutoimmune diseases are conditions in which the immune system mistakenly attacks the body's own cells or tissues as if they were foreign substances. Examples in dogs and cats include autoimmune hemolytic anemia and systemic lupus erythematosus., such as systemic lupus erythematosus, can also be a cause of skin changes and scales at ear margins. In such cases, 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. mistakenly attacks its own skin cells.

Typical accompanying symptoms

Itching: Dogs with scales at the ear margins tend to scratch frequently or rub their ears on objects.
Redness: The skin around the ear margin may appear red and inflamed, indicating irritation or 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..
Hair loss: In some cases, there may be a loss of hair around the affected ear margins.
Odor: An unpleasant odor may occur, especially if there is 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..
Crusts: In addition to the scales, crusts or thicker deposits may form.
Bleeding: With intense scratching or rubbing, the ear margins can bleed.

When to see a vet?

A veterinarian should be consulted if the scaling is accompanied by severe accompanying symptoms such as severe itching, redness, swelling, or bleeding. These signs may indicate a more serious 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. 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. that requires professional treatment.

Even if the scaling does not subside or worsens despite home care, a visit to the veterinarian is advisable. Long-lasting or worsening symptoms may indicate underlying health problems that require targeted 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 parasiticParasitic refers to diseases or conditions caused by parasites. Parasitic infections can affect the digestive tract, skin, and other organ systems. infestation is suspected, especially if other animals in the household are showing symptoms, a quick visit to the veterinarian is important to prevent it from spreading.

Symptom recognition for the pet owner and veterinary diagnostic procedure

Pet owners can recognize scales at ear margins by regularly inspecting their dog’s ears. Noticeable signs such as scales, redness, or scratching should be observed. A thorough 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. including feeding, grooming habits, and changes in the dog’s behavior can also help narrow down the cause.

The veterinarian will perform a comprehensive examination to determine the exact cause of the scaling. This may include a physical examination, skin swabs or scrapings to check for parasites and infections, as well as blood tests to check for systemic diseases.

In some cases, 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 also be indicated to identify possible allergic reactions. A skin biopsyA biopsy is a medical procedure in which a small amount of tissue is removed from the body to be examined under a microscope for signs of disease. Biopsies can help diagnose cancer and other conditions. can help rule out or confirm autoimmune causes.

What the pet owner can do and professional therapy options

Pet owners can help alleviate the symptoms by gently cleaning the affected ear margins regularly. A mild, moisturizing dog shampoo can help reduce the scales, provided it is rinsed thoroughly and the ears are dried well.

The dog’s diet should be checked to ensure that it is balanced and contains sufficient essential fatty acids. Dietary supplements with omega-3 and omega-6 fatty acids can help support skin health.

If an allergic reaction is suspected, potential allergens should be identified and avoided. This may include changing the food or adjusting the environment.

If a parasiticParasitic refers to diseases or conditions caused by parasites. Parasitic infections can affect the digestive tract, skin, and other organ systems. infestation is suspected, all animals in the household should be treated to prevent re-infection. Suitable antiparasitic agents can be recommended by the veterinarian.

It is important to keep the dog’s ears dry and prevent excessive scratching. An Elizabethan collar can help protect the ears from further damage while the underlying cause is being treated.

Outlook on current research

In recent years, research has shown a growing interest in dermatological symptoms in dogs, particularly scaling at ear margins. This symptom may indicate various underlying dermatological or systemic diseases. Scientists are currently investigating the various causes of scaling to develop better 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 strategies. One focus is on the precise analysis of the skin barrier in dogs and how its disorders can lead to scaling.

Another area of research is the role of nutrition and environmental factors in scaling. Researchers are investigating the extent to which malnutrition or allergens in the environment can affect skin health. Studies show that a balanced diet rich in essential fatty acids, vitamins, and minerals can improve skin health and reduce scaling.

In addition, the genetic predispositionA predisposition is an innate inclination or susceptibility of an organism to certain diseases or conditions. In dogs and cats, there may be a genetic predisposition to certain conditions such as hip dysplasia or certain heart diseases. for skin problems in various dog breeds is being investigated. Certain breeds are more susceptible to skin diseases, which is attributed to genetic factors. By identifying these genetic markers, researchers hope to develop more targeted breeding programs in the future to reduce the risk of skin diseases.

Experts are also working on developing new topicalTopical refers to the direct application of medications or treatments to the skin or mucous membranes for a local effect, without being absorbed into the body. treatments that can alleviate the symptoms of scaling. These treatments often include natural ingredients such as Aloe Vera or oat extract, which are known for their soothing properties. Research focuses on how these ingredients, in combination with traditional medical treatments, can improve skin health.

Innovations in diagnostic technology, such as the use of high-frequency ultrasoundUltrasound refers to sound waves that are above the hearing threshold of the human ear. In medicine, ultrasound is used for diagnostic imaging procedures to visualize internal organs, tissues, and blood flow. to examine skin structure, allow veterinarians to obtain more detailed information about the skin health of dogs. These technologies not only help with 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., but also with monitoring the success of the 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. in the treatment of scaling and other dermatological problems.

Frequently asked questions

1. What causes scales at ear margins in dogs?

Scales at ear margins can be caused by various factors, including dry skin, allergies, parasites such as mites, infections, or nutritional problems. Often it is a sign of an underlying skin condition that requires a more detailed examination by a veterinarian.

2. Can a dog's diet affect scaling?

Yes, diet plays an essential role in skin health. An unbalanced diet that lacks essential fatty acids, vitamins, or minerals can lead to dry skin and scaling. The addition of omega-3 and omega-6 fatty acids can help improve skin health.

3. What home remedies can help with scales at ear margins?

Some home remedies, such as the application of coconut oil or oatmeal baths, can help soothe the skin and reduce scaling. However, it is important to consult a veterinarian before using home remedies to ensure that they are appropriate for the specific case.

4. Can scales at ear margins be a sign of an allergy?

Yes, scales at ear margins can indicate an allergic reaction. Allergies can be caused by environmental factors such as pollen or by food. An accurate diagnosis by a veterinarian is necessary to identify the cause of the allergy and take appropriate measures.

5. Are certain dog breeds more susceptible to scaling?

Yes, certain breeds are more susceptible to skin problems, including scaling. Breeds such as West Highland White Terriers, Boxers, and Golden Retrievers are more likely to show skin diseases, which may be due to genetic predisposition.

6. How does a veterinarian diagnose scaling at ear margins?

The veterinarian will perform a thorough physical examination and may take skin samples to diagnose the cause of the scaling. In some cases, blood tests or allergy tests may be necessary to rule out systemic causes.

7. Can stress in dogs cause scaling?

Yes, stress can weaken a dog's immune system and lead to skin problems, including scaling. Stress management and creating a calming environment can help alleviate the symptoms.

8. What medical treatments are available for scales at ear margins?

The treatment depends on the underlying cause. It may include special shampoos, topical medications, oral medications, or changes in diet. In severe cases, long-term therapy may be necessary to control the symptoms.

9. Can regular grooming help reduce scales?

Yes, regularly brushing the coat can help remove dead skin cells and promote blood circulation to the skin. This can reduce scaling and improve overall skin health.

10. Should I bathe my dog if they have scales at ear margins?

Bathing can help control scaling, but it is important to use a suitable shampoo. Bathing too often or using harsh shampoos can dry out the skin and worsen symptoms. A veterinarian can recommend the appropriate product.