Home » Symptoms » Dog Symptoms A-Z » Cutaneous Erythema in the Area of the Ears

Cutaneous Erythema in the Area of the Ears in Dogs

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

ORANGE for severe Itching, Scratching with Wounds, foul odor/ear discharge, Pain, or Head tilted to one side. RED for neurological inner ear signs.

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

Definition

Auricular erythema in dogs, also known as erythema, is a visible change in skin color that indicates increased blood flow or inflammation and can typically be triggered by a variety of causes.

Can Occur with the Following Diseases:

Basics and possible causes

Erythema of the ears in dogs can be caused by several factors, including allergic reactions, infections, or physical irritations. The skin reacts to these stimuli with a dilationDilation refers to the widening or expansion of a hollow organ or vessel. It can be physiological (normal) or pathological (due to disease). of blood vessels, leading to redness.

Allergies are a common cause of skin redness in dogs. These can be triggered by environmental allergens such as pollen, dust mites, or mold. Food allergies are also not uncommon and can manifest through skin symptoms.

Infections, both bacterial and fungal, are further common causes of erythema. The ears, in particular, are susceptible to infections, as they provide a warm and moist environment that promotes the growth of microorganisms.

ParasiticParasitic refers to diseases or conditions caused by parasites. Parasitic infections can affect the digestive tract, skin, and other organ systems. diseases such as mite infestation can also lead to skin redness. Ear mites are relatively common in dogs and, in addition to redness, also cause Itching and Inflammatory conditions.

Physical irritations, such as excessive Scratching, rubbing, or wearing collars, can also lead to redness. In some cases, Contact with irritating chemicals or plants can also be the triggerA trigger is a stimulus that elicits a specific reaction or state. In veterinary medicine, this can refer to emotional responses, such as fear or aggression, or medical conditions, such as seizures in dogs and cats..

Typical accompanying symptoms

Itching: Auricular erythema is often accompanied by intense Itching. The dog shows this by frequently Scratching or rubbing its ears on furniture or the floor.
Swelling: In addition to redness, swelling of the ears may also occur, caused by inflammatory conditions or fluid accumulation.
Odor: An unpleasant odor emanating from the ears can indicate 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., especially if accompanied by redness and discharge.
Discharge: A watery, yellowish, or brown discharge from the ears is another indicationIndication refers to a valid reason or rationale for using a specific treatment, medication, or medical procedure. It is based on the diagnosis and the patient's clinical condition. 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. or mite infestation.
Behavioral changes: The dog may appear restless or irritable and may avoid touching the ears.

When to see a vet?

A veterinarian should be consulted if the redness of the ears is accompanied by severe Pain, persistentPersistent means lasting or continuing for an extended period. In veterinary medicine, it can refer to chronic diseases or symptoms that do not subside. Itching, or visible Inflammatory conditions. Even if the redness does not subside within a few days despite home measures, a veterinary examination is advisable.

In case of 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., such as strong odor or discharge, a visit to the veterinarian is also necessary. These symptoms can indicate a serious bacterial or fungal 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. that requires targeted treatment.

If the dog is severely affected by the redness and Itching or shows Behavioral changes, such as loss of appetite or lethargy, a veterinarian should be consulted to make an appropriate 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 initiate suitable 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..

Symptom recognition for the pet owner and veterinary diagnostic procedure

Pet owners can recognize the symptoms of ear redness by regularly examining their dog’s ears. Look for redness, Swelling, odor, or discharge. Frequent Scratching or rubbing of the ears is also an indicator.

The veterinarian will conduct a comprehensive examination, including a visual inspection of the ears and possibly taking samples for microscopic examination. These samples can help identify infections or mite infestations.

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 performed to diagnose underlying allergic reactions. In some cases, a biopsy of the skin near the ears may also be necessary to rule out other skin diseases.

What the pet owner can do and professional therapy options

As a first measure, the pet owner can gently clean the dog’s ears with a damp cloth to remove dirt or possible allergens. It is important not to use harsh cleaning agents or alcohol, as these can further irritate the skin.

If Itching is present, cooling compresses can provide temporary relief. Make sure the dog does not scratch excessively, as this could worsen the situation. A protective collar can help prevent Scratching.

It is important to minimize potential allergens in the environment. This includes keeping the dog away from known 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. triggers and ensuring the environment is clean and free of dust mites.

If symptoms persist or worsen, the pet owner should not hesitate to see a veterinarian to ensure appropriate treatment.

Outlook on current research

Auricular erythema, also known as erythema, is a frequently observed symptom in dogs that can indicate various underlying causes. Current research is intensively investigating this area to understand the exact mechanisms that lead to this skin change. A key direction of research focuses on the role of 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. in the development of erythema. Studies show that immune responses in dogs, similar to humans, can play a central role in the development of skin redness.

Another important aspect of research is the investigation of 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 diseases in dogs. Researchers have found that certain breeds are more susceptible to skin redness, indicating genetic differences in skin structure and function. Advances in genome sequencing allow scientists to identify specific genes associated with an increased susceptibility to erythema.

Furthermore, research also investigates the influence of environmental factors on the development of erythema. Studies have shown that allergens in the environment, such as pollen or dust mites, can play a significant role. Current research examines how these environmental factors interact with 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. to cause skin redness. These findings could lead to new preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. strategies.

Another promising research area deals with the development of advanced diagnostic tools for the early detection of erythema. By using imaging techniques and biomarkers, scientists hope to detect subtle changes in the skin early, before visible redness occurs. Such technologies could significantly improve 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. and treatment of skin diseases in dogs.

Finally, research also investigates new therapeutic approaches for the treatment of erythema. Innovative therapies aimed at modulating 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. are being developed and tested. These therapies could specifically inhibit inflammatory processes that lead to skin redness. The development of such treatments could significantly improve the quality of life for dogs with 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. skin problems.

Frequently asked questions

1. What is Auricular erythema in dogs?

Auricular erythema in dogs, also known as erythema, is a discoloration of the skin caused by increased blood flow or Inflammatory conditions. It can be triggered by various factors such as Allergies, infections, or irritations.

2. How do I recognize erythema in my dog?

Erythema manifests as a reddish discoloration of the skin, often accompanied by Itching or discomfort. The affected areas may be warm or swollen, and your dog might try to scratch or rub its ears frequently.

3. Which dogs are more susceptible to erythema?

Certain dog breeds, such as Bulldogs, Retrievers, and Cocker Spaniels, are more susceptible to skin problems, including erythema. This can be due to genetic factors that influence skin structure.

4. Can erythema in dogs disappear on its own?

In some cases, mild erythema may disappear on its own, especially if caused by temporary irritations. However, it is important to identify and treat the cause to prevent recurring problems.

5. Should I see a veterinarian if my dog has erythema?

Yes, it is advisable to consult a veterinarian if you notice erythema in your dog. A veterinarian can determine the cause and suggest appropriate treatment to prevent further complications.

6. What treatments are available for erythema in dogs?

The treatment of erythema depends on the underlying cause. Topical creams or ointments, antihistamines, or antibiotics are often prescribed. In some cases, a change in diet or avoidance of allergens may be necessary.

7. Can home remedies help treat erythema?

Some home remedies, such as cool compresses or aloe vera, can provide temporary relief. However, it is important to seek advice from a veterinarian before using any home remedy to ensure it is safe for your dog.

8. How can I prevent erythema in my dog?

The prevention of erythema can be achieved through regular grooming, a balanced diet, and avoiding known allergens. Regular veterinary check-ups can also help detect and treat skin problems early.

9. What role do Allergies play in the development of erythema?

Allergies play a significant role in the development of erythema. Environmental allergens, food Allergies, or Contact Allergies can activate the immune system and cause skin redness.

10. Are there long-term complications from untreated erythema in dogs?

Yes, untreated erythema can lead to chronic skin problems, infections, and a deterioration in quality of life. It is important to treat the underlying causes to avoid long-term complications.