Food allergy in four-legged friends
Cheyletiellosis disease picture

Disease demodicosis


Demodicosis is a parasitic, non-contagious skin disease. Young dogs are almost exclusively affected.

Disease origin and development

The Demodex mites are found in small numbers on all dogs, where they live in the hair follicles but do not trigger any symptoms of the disease. Puppies have immature immune systems. If there is still stress when changing hands, it can happen that the mite reproduces too much. This then triggers Demodex disease. The immune deficiency is usually congenital in young animals and acquired in adult animals.

Clinical picture – symptoms

A distinction is made between the localized and the generalized form. In localized demodicosis, localized immunosuppression results in localized hair loss (e.g. around the eyes), which can sometimes cause severe itching. This form usually heals on its own. Therapy is therefore limited to the control of secondary infections. The generalized form is often the result of an untreated or improperly treated localized form of the disease. The symptoms are spread all over the body. The dog has numerous skin changes on the head, trunk and extremities. Inflammations between the toes can also be seen on several paws. Adult dogs are extremely rarely affected by the disease than young dogs. In older dogs and dogs, the cause is more likely to be an internal disease, malignant growth of body tissue or treatment with immunosuppressants.


In the localized form, the prognosis is quite favorable as long as the dog has been treated. A local infection of the paws, on the other hand, is treated like a generalized form. This therapy is very intense. From a clinical point of view, these dogs also improve if mites are also found. After the end of treatment, there is a risk of an immediate relapse. In this case, long-term therapy is necessary.

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Dogs suffering from generalized demodicosis should in any case be excluded from breeding, as the tendency is passed on to the puppies.

Allergic or atopic eczema Allergic contact eczemaCheyletiellosisDemodicosisFeed allergyAutumn grass mitesPemphigusSkabies