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Dermatoses (Skin Inflammation) in Dogs

Occurrence: common
Location of illness: Skin/Fur

Author: Dr. med. vet. Gisa Löwe | Last modified: 06.11.2025

Dermatoses are Inflammatory conditions of the skin in dogs that can be caused by various factors and manifest themselves through a variety of skin changes and symptoms.

The most important facts at a glance

Dermatoses in dogs are Skin inflammation caused by various factors such as allergies, infections, or parasites. A dog’s skin consists of several layers that together form a protective barrier against external influences. Allergies triggered by environmental factors, food, or flea bites often lead to an overreaction 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. and thus to Inflammatory conditions. Infections by 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., fungi, or viruses, as well as parasiticParasitic refers to diseases or conditions caused by parasites. Parasitic infections can affect the digestive tract, skin, and other organ systems. infestations by fleas, mites, or ticks, can also lead to dermatoses. Symptoms include redness, loss of pigmentation, and poor coat quality. 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 by a veterinary examination and tests such as skin swabs or blood tests. Treatment depends on the cause and may include antihistaminesAntihistamines are medications that block the effects of histamine in the body, thereby alleviating allergic reactions. They are used in dogs and cats to treat Itching, Skin inflammation, and other allergy symptoms., antibiotics, or antiparasitic agents. 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 often good if the cause is identified and treated, but 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. cases may require long-term measures. Preventive measures such as regular skin care and parasiteA parasite is an organism that lives on or in another living being (the host) and feeds at its expense. Parasites can cause a variety of diseases in animals and humans. control are important to avoid dermatoses. Research focuses on genetic causes, the skin microbiome, and the development of new diagnostic and treatment methods to improve the well-being of dogs with skin diseases.

Causes

The skin of dogs consists of several layers, including the epidermisThe epidermis is the outer layer of skin that protects the body from environmental influences. It consists of several layers of keratinized cells and is responsible for the skin's barrier function., dermis, and subcutis. These layers work together to form a barrier against environmental influences and play an important role in temperature regulation and protectionProtection refers to safeguarding against diseases or harm. In veterinary medicine, this can include protecting animals through vaccinations, the use of parasite control products, or providing a safe environment. against infections. The skin also contains hair follicles, sebaceous glands, and sweat glands, all of which contribute to maintaining skin health.

Dermatoses in dogs can be caused by a variety of factors, ranging from allergies to infections and parasites. A common cause is allergic reactions, which can be triggered by environmental allergens, food allergies, or flea bites. These allergies often lead to an overreaction 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., which manifests as Skin inflammation.

InfectiousInfectious describes the ability of a pathogen to be transmitted from one individual to another and trigger an infection. It also refers to diseases caused by such pathogens. causes such as 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., fungi, or viruses can also cause dermatoses. Bacterial infections, such as those caused by staphylococci, are particularly common and often occur secondarily when the skin barrier has already been weakened by Scratching or other factors. Fungal infections, such as those caused by dermatophytes, can also lead to Skin inflammation.

Parasites such as fleas, mites, or ticks are another common cause of dermatoses. Flea infestations can lead to flea 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. dermatitis, while mites that cause Sarcoptes or Demodex can lead to scabies or demodicosis. These parasites cause severe Itching and skin irritation, which can lead to serious Inflammatory conditions if left untreated.

Symptoms

Very common symptoms:

Common symptoms:

Rare symptoms:

The symptoms of dermatoses in dogs can vary depending on the cause and severity of the disease. The most common symptoms include Itching, redness, and Swelling of the skin. Dogs tend to scratch, bite, or lick themselves frequently, which can lead to further skin damage.

Other visible signs may include Hair loss, Scaling of the skin, and the appearance of Crusts or blisters on the skin. In some cases, thickening of the skin or hyperpigmentationHyperpigmentation is a skin condition in which certain areas of the skin become darker than the surrounding skin. This can be caused by an overproduction of melanin, sun exposure, inflammatory conditions, or other factors. may also occur. In more severe infections, Pustules or purulentPurulent refers to pus or the production of pus, which may indicate a bacterial infection. Purulent inflammatory conditions are often painful and may have significant swelling and redness. Lesions may also develop.

Some dogs show systemic symptoms such as lethargy, Fever, or loss of appetite, especially if the dermatoses are caused by a systemic 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 a severe allergic reaction.

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 dermatoses in dogs usually begins with 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. and a physical examination by the veterinarian. The veterinarian will ask about the onset of symptoms, the dog’s lifestyle, and possible triggers.

To determine the exact cause of the dermatoses, various diagnostic tests can be performed. Skin swabs, skin biopsies, or skin scrapings can be used for microscopy to look for parasites, 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., or fungi. Blood tests can provide information about systemic infections or allergic reactions.

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, such as intradermal tests or serological tests, can help identify specific allergens that cause the dermatoses. In some cases, an eliminationElimination refers to the process by which waste products and toxins are removed from the body. This includes excretion via the kidneys (urine), intestines (stool), lungs (breath), and skin. diet may also be necessary to diagnose food allergies.

Therapy

The treatment of dermatoses in dogs depends on the underlying cause. In the case of allergic reactions, avoiding the allergenAn allergen is a substance that can trigger an allergic reaction in sensitized individuals. These reactions vary in intensity and can range from mild symptoms to severe, life-threatening conditions. may be necessary, accompanied by the administration of antihistaminesAntihistamines are medications that block the effects of histamine in the body, thereby alleviating allergic reactions. They are used in dogs and cats to treat Itching, Skin inflammation, and other allergy symptoms. or corticosteroidsCorticosteroids are a class of steroid hormones that occur naturally in the body and can also be produced synthetically. They have anti-inflammatory and immunosuppressive properties and are used in veterinary medicine to treat a variety of conditions. to relieve symptoms. In some cases, desensitizationDesensitization is a treatment procedure that aims to reduce an animal's sensitivity to an allergen. This is done through gradual exposure to the allergen in controlled doses to build tolerance. 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. may be considered.

Antibiotics are often used for bacterial infections, while antifungals are prescribed for fungal infections. In the case of parasiticParasitic refers to diseases or conditions caused by parasites. Parasitic infections can affect the digestive tract, skin, and other organ systems. infections, antiparasitic agents are required to eliminate the parasites and relieve the Itching.

Additional measures may include the use of medicated shampoos, 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, and nutritional supplements to support skin health and promote healing.

Prognosis and follow-up care

The prognosis for dogs with dermatoses depends on the cause and severity of the disease. In many cases, especially if the cause is identified and treated correctly, 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 good. Most dogs recover completely or can manage their symptoms well with ongoing treatment.

However, 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. or recurrentRecurrent refers to a disease that repeatedly returns or worsens after a temporary remission or improvement. dermatoses may require a long-term management strategy. Some dogs may require lifelong treatment or adjustments to their environment or diet to prevent relapses.

Prevention

To prevent dermatoses in dogs, good skin and coat care is essential. Regular brushing helps to remove dead skin cells and keep the skin healthy. The use of high-quality shampoos and care products can also help to strengthen the skin barrier.

Parasite preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. is crucial to prevent flea and mite infestations. Regular use of flea and tick preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. products and regular veterinary visits to check for parasites can significantly reduce the risk of dermatoses.

For dogs with known allergies, an adjustment of diet or environment may be necessary. The use of hypoallergenic feeds or the avoidance of known allergens can help to avoid allergy-related skin problems.

Regular veterinary examinations are important to detect and treat early signs of skin problems before they worsen. Close cooperation with the veterinarian makes it possible to develop the best preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. and treatment strategy for the individual dog.

Outlook on current research

Research on dermatoses in dogs is a dynamic field that is constantly evolving. One focus is on identifying genetic predispositions for certain skin diseases. Some breeds are more susceptible to skin problems, which is attributed to genetic factors. Scientists are investigating the genetic markers associated with these diseases to develop better diagnostic and treatment methods.

Another significant area of research is the role of the skin microbiome. The skin of dogs harbors a variety of microorganisms that must be kept in a healthy balance. Researchers are investigating how changes in the composition of this microbiome are related to the development of dermatoses and whether probiotic or prebiotic treatments can help to restore the balance.

Inflammatory reactions of the skin are another central topic. The study of the mechanisms that lead to Inflammatory conditions helps to develop new therapeutic approaches. This includes the exploration of anti-inflammatory drugsAnti-inflammatory drugs are medications that reduce inflammation. They can be divided into nonsteroidal anti-inflammatory drugs (NSAIDs) and corticosteroids and are used in dogs and cats to reduce Inflammatory conditions and Pain. and the investigation of natural remedies that may have anti-inflammatory properties.

Current research is also examining the influence of the environment on the skin health of dogs. Environmental factors such as allergens, air pollution, and diet can increase the risk of developing dermatoses. Studies aim to better understand these factors and develop strategies to minimize their impact.

Another area of research is the development of new diagnostic techniques. This includes advanced imaging techniques and molecular tests that allow early and accurate 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 skin diseases. Such technologies could make it easier for veterinarians to identify specific causes of dermatoses and provide targeted treatments.

The development of vaccines against certain parasiticParasitic refers to diseases or conditions caused by parasites. Parasitic infections can affect the digestive tract, skin, and other organ systems. infections that can lead to skin problems is also a promising area. By preventing such infections, the occurrence of dermatoses could be significantly reduced.

The interdisciplinary collaboration between veterinary physicians, geneticists, dermatologists, and environmental scientists contributes to gaining a more comprehensive understanding of dermatoses. This collaboration promotes the development of integrated approaches to preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring., 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.

In addition, there is promising research on the use of stem cell therapies to treat serious skin diseases. Stem cells could promote the regeneration of damaged skin tissues and thus accelerate healing.

An emerging area is personalized medicine, in which treatment plans are individually tailored to the genetic and health background of the individual dog. This approach could significantly improve the effectiveness of therapies.

In conclusion, research on dermatoses in dogs aims to improve the well-being of animals by providing innovative solutions to an old problem. Advances in science promise a future in which dogs with skin diseases can be treated more effectively.

Frequently asked questions (FAQs)

What are the most common causes of dermatoses in dogs? Dermatoses can be caused by a variety of factors, including allergies (such as flea bites, environmental and food allergies), infections (bacterial, viralViral refers to viruses and their effects on the organism. Viral infections in dogs and cats can range from harmless colds to severe, life-threatening diseases., fungal, or parasiticParasitic refers to diseases or conditions caused by parasites. Parasitic infections can affect the digestive tract, skin, and other organ systems.), genetic predispositions, hormonal imbalances, and environmental factors.
How do I know if my dog has a dermatosis? Symptoms of dermatoses can be Itching, redness, Scaling, Hair loss, skin rashes, ulcers, and unpleasant odor of the skin. If a dermatosis is suspected, a veterinarian should be consulted to make an accurate 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..
Can dermatoses in dogs be cured? Whether a dermatosis can be cured depends on the cause. Some dermatoses, especially those caused by allergies or genetic factors, cannot be completely cured but can often be effectively managed. Others, such as dermatoses caused by parasites, can often be treated successfully.
What treatments are available for dermatoses? The treatment of dermatoses can include 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 (such as shampoos and ointments), systemic medications (such as antibiotics or antihistaminesAntihistamines are medications that block the effects of histamine in the body, thereby alleviating allergic reactions. They are used in dogs and cats to treat Itching, Skin inflammation, and other allergy symptoms.), dietary changes, avoidance of allergens, and in some cases surgical procedures. The specific treatment depends on the cause of the dermatosis.
How can I reduce the risk of dermatoses in my dog? Regular grooming, a balanced diet, avoiding known allergens, and controlling parasites can help reduce the risk of dermatoses. Regular veterinary examinations are also important to detect problems early.
Are certain dog breeds more susceptible to dermatoses? Yes, certain breeds are more susceptible to skin problems due to genetic factors. These include Spaniels, Retrievers, Terriers, and some Bulldog breeds. These breeds should be monitored particularly carefully.
Can dermatoses be transmitted from dogs to humans? Some dermatoses, especially those caused by parasiticParasitic refers to diseases or conditions caused by parasites. Parasitic infections can affect the digestive tract, skin, and other organ systems. infections such as scabies, can be transmitted to humans. It is important to observe hygiene practices and treat affected dogs to minimize the risk of transmission.
What role does nutrition play in the development of dermatoses? Nutrition can play a significant role. Food allergies or intolerances can cause or worsen dermatoses. A balanced diet that is free of known allergens can help to prevent or alleviate skin problems.
How often should I bathe my dog to avoid dermatoses? Frequent bathing can remove the skin’s natural oils and lead to skin irritation. As a rule, a dog should not be bathed more than once a month, unless there is a medical reason to do so. A veterinarian can give specific recommendations based on your dog’s skin health.
Do environmental factors play a role in dermatoses? Yes, environmental factors such as pollen, dust, mold, and chemical irritants can 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. or worsen dermatoses. Minimizing exposureExposure refers to the Contact with or subjection to certain substances, environmental factors, or pathogens. In veterinary medicine, this can include Contact with toxins, allergens, or infectious agents that can cause health problems in dogs and cats. to these factors can help reduce the risk of skin problems.

When to visit the vet?

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