Redness and Crusting, Especially on the Face and Ears in cats

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

When to visit the vet?

Non-urgent see a veterinarian within 2–3 days

?

ORANGE for Ulceration/Bleeding, severe Pain, foul odor/purulent discharge, Fever/apathy, or rapid progression. ORANGE also for unpigmented ear margins/rhinarium with chronic Crusts (actinic/SCC-DDx). RED for necrotic changes, severe Bleeding, or severe general condition.

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

Definition

Redness and crusting, especially on the face and ears in cats are visible skin changes that indicate an inflammatory reaction of the skin and are often caused by infections, allergies, or parasites.

Can Occur with the Following Diseases:

Basics and possible causes

Redness and crusting in cats can occur for various reasons. The skin is the largest organ and serves as a barrier against the outside world. A variety of factors can break this barrier and lead to inflammatory conditions. The most common causes include allergic reactions, infections, and parasites.

Allergies are a common cause of skin problems in cats. These can be triggered by environmental allergens such as pollen, house dust mites, or by food allergies. In such cases, the immune system overreacts to harmless substances, which can lead to skin redness and crusting.

Infections, both bacterial and fungal, can also lead to redness and Crusts. Bacterial infections often occur secondarily when the skin barrier is already damaged, for example, by Scratching. Fungal infections, such as ringworm, are contagious and can easily be transmitted from animal to animal or even to humans.

Parasites such as fleas, mites, or ticks are also common causes. Fleas can trigger flea allergy dermatitis, which leads to severe Itching, redness, and crusting. Ear mites are specifically responsible for redness and crusting on the ears.

Typical accompanying symptoms

  • Itching: Often accompanied by intense Scratching, which further damages the skin and promotes infections.

  • Hair loss: Can occur locally around the affected areas, especially with severe Itching or infections.

  • Swelling: The affected skin areas may appear swollen, indicating an inflammatory condition.

  • Behavioral changes: The cat may withdraw, be irritable, or show an increased need for grooming.

  • Pain: Especially with infectious causes, the affected areas can be painful.

  • Discharge from the ear: With ear mites or infections, a dark or foul-smelling Discharge from the ear might be visible.

When to see a vet?

A visit to the vet is urgently required if the cat shows increased signs of discomfort, such as excessive Scratching, Hair loss, or Behavioral changes. Even if the redness and Crusts do not heal on their own within a few days, a vet should be consulted.

If the cat shows signs of pain, such as reacting sensitively to touch, or if it frequently shakes its head, this could indicate a serious ear infection that requires immediate action.

In case of suspected parasite infestation or a contagious disease, a quick vet visit is also necessary to prevent spread to other animals or humans.

Symptom recognition for the pet owner and veterinary diagnostic procedure

For pet owners, it is important to recognize symptoms early and monitor the cat closely. Look for signs such as frequent Scratching, Head shaking, or changes in coat condition. The affected areas should be examined for redness, Swelling, or Crusts.

The veterinarian will perform a thorough clinical examination to determine the cause of the symptoms. This includes a visual inspection of the affected Skin changes and ears, as well as, if necessary, taking skin samples for microscopic examinations or cultures.

Blood tests might be necessary to identify allergic reactions or systemic infections. In some cases, an allergy test is performed to identify specific triggers.

What the pet owner can do and professional therapy options

As a first measure, the pet owner can try to prevent the cat from Scratching to avoid additional skin damage. This can be achieved by wearing a soft Elizabethan collar that restricts access to the affected areas.

It is important to keep the cat’s environment clean and to clean it regularly to reduce potential allergens or parasites. Thorough cleaning and disinfection of sleeping areas and frequently used areas are recommended.

If an allergic reaction is suspected, switching to hypoallergenic food can be considered until a specific Diagnosis is made by the vet. However, this should always be done in consultation with a specialist.

The use of natural or gentle skin care products can help soothe the skin and promote healing. Products such as aloe vera gel or chamomile ointments can have anti-inflammatory effects and support skin regeneration.

Outlook on current research

Current studies focus on the genetic factors that can lead to skin problems in cats, including Redness and crusting, especially on the face and ears. Researchers are particularly investigating the role of specific genes that influence skin sensitivity and immune response. These genetic markers could be used in the future to identify cats at higher risk for skin problems, enabling earlier and more targeted intervention.

Another research area is the investigation of the microbiome balance on the skin of cats. Scientists are trying to understand how the balance of microorganisms on cat skin is affected and what role it plays in the development of redness and Crusts. A disturbed microbiome could lead to inflammatory conditions and infections, which in turn worsen the symptoms.

In addition, intensive research is being conducted on the development of new topical treatments. These treatments aim to strengthen the skin barrier and reduce inflammatory conditions without affecting the skin’s natural protective mechanisms. There are promising approaches with plant extracts and synthetic molecules being tested in clinical studies.

Another interesting approach in research is the investigation of the effects of nutrition on skin health. Certain nutrients and fatty acids have been linked to better skin health, and research is exploring whether dietary supplements can help alleviate symptoms such as redness and crusting. This research is particularly promising as it could offer a simple and cost-effective way to support skin health.

Research into environmental factors that can exacerbate skin problems in cats is also ongoing. Studies show that factors such as humidity, temperature, and exposure to allergens can play a significant role in the severity of symptoms. Researchers are working to identify specific environmental factors that can be avoided or controlled to improve the quality of life for cats with skin problems.

In the long term, research into redness and crusting in cats could lead to the development of preventive measures to minimize the occurrence of these symptoms. A more comprehensive genetic and environmental database could help make early predictions about the risk of skin problems and create individually tailored care plans for cats.

Frequently asked questions

1. What are the most common causes of redness and crusting on my cat's face and ears?
The most common causes of these symptoms are allergic reactions, parasitic infestations such as fleas or mites, bacterial or fungal infections, and sometimes autoimmune diseases. An accurate Diagnosis usually requires an examination by a veterinarian.
2. Can redness and crusting in cats disappear on their own?
In some cases, mild symptoms may disappear on their own, especially if caused by temporary irritations. However, with persistent or worsening symptoms, a vet should always be consulted to rule out more serious underlying problems.
3. How can I help my cat if it has crusts on its face and ears?
First, you should try to keep the affected areas clean and dry. You can also try to prevent the cat from excessive Scratching or rubbing. A veterinary examination is important to clarify the cause of the symptoms and initiate appropriate treatment.
4. Can my cat's diet affect redness and crusting?
Yes, diet can play a role. An unbalanced diet or nutrient deficiencies can promote Skin changes. Some cats also react with an Allergy to certain foods, which can lead to Skin changes.
5. Are certain cat breeds more susceptible to these symptoms?
Yes, some breeds like Persians and Siamese cats are more susceptible to skin problems due to their genetic predisposition and specific skin characteristics. Nevertheless, cats of all breeds can be affected.
6. How is the cause of redness and crusting diagnosed?
A veterinarian will usually use a combination of physical examination, medical history, and diagnostic tests such as skin scrapings, blood tests, or allergy tests to determine the cause.
7. Can environmental factors trigger redness and crusting?
Yes, environmental factors such as allergens, dust, pollen, or even certain cleaning products can trigger skin reactions in cats, leading to redness and crusting.
8. Are there home remedies that can help?
While some home remedies such as the application of diluted apple cider vinegar or chamomile tea can help alleviate the symptoms, they should not be used without consulting a veterinarian, as they can also cause irritation.
9. How long does the treatment of redness and crusting in cats take?
The duration of treatment depends heavily on the cause of the symptoms. For allergic reactions or infections, treatment can take several weeks, while chronic conditions may require longer-term care.
10. Are redness and crusting in cats contagious?
The risk of contagion depends on the cause. Infections caused by fungi or mites can be transmitted to other animals, while allergic reactions are not contagious.