The most common skin diseases of the dog and their symptoms

Since the skin of the dog – apart from the original breeds without fur dress such as the Peruvian Inca dog and the Mexican Xoloitzcuintle – is covered by hair, its skin problems are discovered late. Therefore, frequent – preferably daily – coat and skin care should be a must for every responsible dog owner. The list of possible symptoms is similar to that of humans. Only a diagnosis by the veterinarian can provide certainty. Completely stress-free for your

rat terrier beagle mix  and without long waiting times, this is possible online at Dr. Fressnapf. The veterinary team easily examines your darling via video chat and can thus possibly already make a diagnosis.


The following hints can help you assess the situation.



An allergy in dogs is one of the most difficult diseases to diagnose. The difficulty is to find the allergen (allergy trigger) for the allergy. Is it the dog shampoo, the food or the flea bite? If the triggering allergen is found, the dog’s condition usually improves very quickly.


Possible skin symptoms include:


  • Itching is associated with frequent scratching
  • Skin redness and pustules
  • Dog nibbles body parts bloody
  • Partial coat loss or thinning
  • Dull and/or scaly fur
  • Digestive problems or loss of appetite
  • Severe restlessness of the dog


Hormonal problems

If there is a change in the coat structure or hair loss, problems with the internal organs or the hormonal system can be the cause. Especially diseases of the digestive organs (intestines) and the thyroid gland quickly show up on the coat.


Cushing’s syndrome, a disease of the adrenal gland, is also associated with a hormonal disorder and should be treated immediately by a veterinarian.


Tumors also often have a hormonal cause in dogs, which must be examined immediately by the specialist. These include, for example, the testicular tumor in males or the ovarian tumor in.


Possible skin symptoms include:


Thyroid gland: dull or thinner coat, dry, flaky skin

Cushing’s syndrome: hair loss, common skin infections, dark to black discoloration of the skin, paper-thin, transparent skin

Testicular/ovarian tumor: hair loss and general change of coat possible


Autoimmune diseases

Here, the immune system of the dog acts in the same way as that of humans against the body’s own cells, and organs. This can also affect the skin. The so-called collie nose or discoid lupus erythematosus is common in collie and sheltie, but can also affect other dog breeds (German Shepherd, German Shorthair, Siberia Husky). Typical for this disease is that sun exposure leads to a worsening of the symptoms. Skin infections that do not respond to antibiotics can also be an indication of this.


Possible skin symptoms include:


Skin redness in the entire nasal area

Loss of nasal structure with later encrustations

Crusts on the face and ears, later on the whole body

Despite skin symptoms, no further health problems recognizable



The family of diseases caused by fungi is diverse. However, the most common pathogens in skin diseases of the dog include thread fungi and yeast fungi. More puppies than adult dogs suffer from infestation by filamentous fungi, with the fungus Mikorsporum Canis usually being the trigger. Yeast diseases such as Malassezia dermatitis multiply rapidly and lead to conspicuous skin infections – especially if the dog’s immune system is already weakened by another disease.


Take the symptoms seriously and present your four-legged friend to the veterinarian. The fungal diseases weaken your dog’s immune system and are contagious to humans!


Possible skin symptoms include:


Thread fungus: “Trademarks” are circular hairless spots in the fur surrounded by a skin throw.

Yeast fungus: Reddening of the skin with greasy, foul-smelling scaling, affecting the ears, paws, armpits and the underside of the neck.

General signs: scaly, greasy, thin coat, diffuse hair loss.


Bacterial infections

Bacteria on the skin multiply particularly well and quickly when the dog’s organism is already weakened by other diseases. Often, the bacterial infection is a concomitant disease of an allergy.


The symptoms are usually atypical or masked by those of the allergy:


  • Itching and redness of the skin
  • Hair loss
  • Pustules, purulent wounds (caused by scratching)
  • Unpleasant skin odor



Parasites include, in particular, (grass) mites, fleas, ticks and also lice. Flea bites often lead to allergic reactions, ticks hang not only allergies, but also viruses and bacteria and thus diseases such as Lyme disease and ehrlichiosis transmit.


Possible skin symptoms include:


  • Hair loss
  • Severe itching
  • Encrustations of the skin
  • General skin irritation
  • Black dots on the skin (edges of the ears, auricle) associated with frequent
  • Shaking your head


Through regular checks, grooming and suitable prophylaxis (e.B spot-on preparations or collars), you can prevent the pests in good time. However, you can only solve existing infestations with the help of medical preparations that the veterinarian prescribes for you.

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