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Thickened Skin (Pachyderma) 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

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

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Pachydermia in dogs is a condition characterized by skin thickened. This thickening can occur due to various causes and can be either localized or distributed throughout the body.

Can Occur with the Following Diseases:

Grundlagen und mögliche Ursachen

A dog’s skin 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 subcutaneousSubcutaneous means "under the skin." In medicine, it refers to the administration of drugs or the placement of implants directly under the skin. tissue (subcutis). Skin thickening can occur in any of these layers, with the most common cause being an excessive production of collagen in the dermis. This collagen production can be stimulated by inflammatory conditions, 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. irritation, or geneticsGenetics is the science of genes, heredity, and the variation of organisms. It studies how genetic information is passed from generation to generation and how it influences the development, appearance, and behavior of living things. factors.

One of the most common causes of pachydermia is a 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. inflammation of the skin, which can be caused by allergies, 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. infestations, or bacterial infections. Allergies, especially to food or environmental factors such as pollen or dust mites, often lead to 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 and scratching, which skin thickened. Parasites such as mites or fleas can also irritate the skin and cause thickening.

Hormonal disorders such as hypothyroidism (underactive thyroid) or Cushing’s syndromeA syndrome is a group of symptoms that occur together and indicate a specific disease or condition. A syndrome can be caused by various factors and is often complex in its diagnosis and treatment. (overproduction of 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.) can also lead to skin thickening. In these diseases, the dog’s hormoneHormones are chemical messengers produced by endocrine glands and released into the bloodstream to affect specific cells or organs in the body. They regulate numerous bodily functions, including growth, metabolism, and reproduction. balance is disturbed, which manifests itself in various symptoms including skin changes.

Genetic factors also play a role. Certain breeds are more prone to skin thickening, including Basset Hounds, Shar Peis, and Bulldogs, which genetically have thicker and more wrinkled skin. These breeds are also more prone to skin infections, which can lead to further skin thickening.

Typische Begleitsymptome

Skin thickening: These can present as rough, leathery, or swollen areas on the skin. They are often visible in places that are frequently stressed or irritated, such as elbows or folds.
Itching: Often accompanied by scratching or biting of the affected area, which can worsen the thickening.
Redness and inflammation: The affected skin areas may be red and inflamed, especially with an underlying 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..
Hair loss: In some cases, there may be local or diffuse hair loss, especially if the skin is severely irritated.
Scaly or scabby skin: The surface of the skin thickened can become scaly or scabby, often as a result of continued irritation or inflammation.
Unpleasant odor: Skin thickened, especially if infected, can secrete an unpleasant odor.

Wann zum Tierarzt?

A visit to the vet is essential if you notice symptoms of skin thickening in your dog, especially if these are accompanied by other symptoms such as itching, inflammation, or hair loss. An 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 can help identify the cause and prevent the disease from progressing.

If the skin thickening occurs suddenly or worsens rapidly, an immediate visit to the vet is necessary. This could indicate an acute 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 an allergic reaction that requires immediate treatment.

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 thickening that does not respond to home remedies or basic care should also be examined by a veterinarian to rule out more serious underlying problems and to begin appropriate treatment.

Symptomerkennung für den Tierhalter und tierärztliches diagnostisches Vorgehen

For the pet owner, the detection of skin thickening in dogs can be done through visual inspection and palpationPalpation is an examination method in which the condition of body tissues is assessed by feeling them with the hands. It is used to identify swelling, pain, or other abnormalities. of the skin. Pay attention to changes in skin texture, redness, or balding areas. If thickening is suspected, the veterinarian should be consulted.

The veterinarian will take 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 perform a physical examination. The skin is then carefully inspected for typical signs of inflammatory conditions or infections. In some cases, 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. may be necessary to determine the exact cause of the thickening.

Additional 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. tests may include blood tests to rule out hormonal disorders, as well as 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 to identify potential triggers such as food or environmental factors. If a 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. infestation is suspected, a microscopic examination of skin scrapings can be performed.

Was kann der Tierhalter tun und professionelle Therapieoptionen

As a pet owner, you can take some measures to alleviate the symptoms and improve your dog’s condition. Avoid cleaning or rubbing the affected areas too much, as this can further irritate the skin. Instead, you can gently dab the skin with a damp cloth to remove dirt or irritants.

The use of cool compresses can help relieve itching and inflammation. Make sure your dog does not scratch or bite the affected areas by using a protective collar if necessary.

Pay attention to a balanced diet and provide your dog with sufficient essential fatty acids, which can promote skin health. If a food 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, an exclusion diet in consultation with the veterinarian can be helpful.

In some cases, the veterinarian may recommend the use of 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. or systemic medications to reduce inflammation and treat infections. Strictly follow the veterinarian’s instructions and do not stop the treatment on your own, even if the symptoms improve.

Ausblick auf aktuelle Forschung

Skin thickening, also known as pachydermia, is a symptom that can have various causes in dogs, and understanding of it is steadily growing in veterinary medicine research. Current studies focus on identifying the geneticsGenetics is the science of genes, heredity, and the variation of organisms. It studies how genetic information is passed from generation to generation and how it influences the development, appearance, and behavior of living things. and environmental factors that lead to this skin change. Researchers are investigating how certain dog breeds have a geneticsGenetics is the science of genes, heredity, and the variation of organisms. It studies how genetic information is passed from generation to generation and how it influences the development, appearance, and behavior of living things. 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 pachydermia, suggesting that there may be heritable elements that increase the risk.

Another area of research involves examining the skin microbiota of dogs with pachydermia. Scientists are analyzing how the balance of microorganisms on the skin affects skin health. These studies could lead to new probiotic treatments aimed at supporting the skin flora and alleviating the symptoms of pachydermia.

The role of environmental factors, such as diet and 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 pollutants, is also being intensively researched. Studies show that an unbalanced diet and certain environmental conditions can increase the likelihood of dogs developing skin problems, including pachydermia. This could mean that the risk can be minimized through an optimized diet and a controlled environment.

Another focus is on the development of non-invasive 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. techniques that make it possible to precisely measure skin structure and thickness. Advances in imaging technology and dermatologyDermatology is the branch of medicine that deals with the structure, function, and diseases of the skin. It includes the diagnosis and treatment of skin, hair, and nail disorders. offer new opportunities to detect and monitor pachydermia early. This could improve the treatment of dogs by enabling veterinarians to create individually tailored 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. plans.

In therapeutic research, innovative approaches are being developed that aim to treat the underlying causes of pachydermia, rather than just alleviating the symptoms. This includes the development of drugs that specifically target the molecular mechanisms that lead to skin thickening. Such treatments could offer long-term improvements for affected dogs.

In summary, research into pachydermia in dogs is dynamic and is moving on several fronts. Advances in geneticsGenetics is the science of genes, heredity, and the variation of organisms. It studies how genetic information is passed from generation to generation and how it influences the development, appearance, and behavior of living things., microbiome research, environmental factor analysis, and the development of new 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 approaches offer promising prospects for improving the well-being of affected dogs. Future studies will likely continue to help unravel the complexity of this symptom and develop more effective therapies.

Häufig gestellte Fragen

What is pachyderma in dogs? Pachydermia refers to an abnormal skin thickening in dogs that can be caused by various factors, such as geneticsGenetics is the science of genes, heredity, and the variation of organisms. It studies how genetic information is passed from generation to generation and how it influences the development, appearance, and behavior of living things. predispositions, infections, or allergic reactions.
How do I recognize pachyderma in my dog? Signs may include visible skin thickening, rough or leathery skin texture, and possibly itching or discomfort. It is important to consult a veterinarian if you suspect it.
Which dog breeds are more prone to pachyderma? Some breeds are more susceptible due to geneticsGenetics is the science of genes, heredity, and the variation of organisms. It studies how genetic information is passed from generation to generation and how it influences the development, appearance, and behavior of living things. factors, including Shar Peis, Bulldogs, and Basset Hounds. These breeds often have a natural tendency to skin problems.
Can pachyderma be cured? There is no direct cure, but the symptoms can be alleviated through appropriate treatments and management strategies. Success depends on the exact cause of the pachydermia.
What treatments are available for pachyderma in dogs? Treatments may 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. therapies, special diets, medications, or in some cases surgical procedures to alleviate symptoms and improve the dog’s quality of life.
Can a specific diet help prevent or treat pachyderma? A balanced diet rich in omega-3 fatty acids and vitamins can help support skin health and alleviate symptoms. A special diet should always be discussed with a veterinarian.
Is pachyderma painful in dogs? Pachydermia itself is not necessarily painful, but can lead to secondary infections or irritations that can cause discomfort or pain. Itching is a common accompanying symptom.
How is pachyderma diagnosed? 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. is made by a physical examination, skin biopsies, and possibly blood tests to identify the underlying cause. A veterinarian can make a comprehensive 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 environmental factors affect pachyderma in dogs? Yes, environmental factors such as allergens, humidity, chemical 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., and 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. can influence the development or worsening of pachydermia. A controlled environment can minimize the risk.
Should I take my dog to the vet immediately if I suspect pachyderma? Yes, it is advisable to see a veterinarian at the first signs of skin thickening or other skin changes to enable 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.