Why do dogs have itchy skin? What are the causes of itching in dogs?

Mar 18,2024
5Min

Dogs will often scratch their own skin, and sometimes they will scratch themselves, which makes the owner feel distressed. There are many causes of itching in dogs, the common ones are: fungi, Demodex, pyoderma, and eczema.

Fungi:

Various skin diseases caused by skin molds invading the dog's skin, coat and keratin tissue of toes and claws. There are symptoms of constant scratching and hair loss.

Constant scratching, hair loss, round scaly spots;

There is also no hair loss or dandruff but there are local papules, pustules or erythematous hair loss spots or nodules.

Canine scabies mite:

Scabies is an itchy parasitic skin disease of dogs, wolves and foxes. Dogs often rub or scratch their skin to become infected, gnaw, rub, and become irritable, which affects normal food intake and rest.

Scabies is an itchy parasitic skin disease of dogs, wolves and foxes. Dogs often become infected by rubbing or scratching their skin.

The disease has no strict seasonality, but the disease is more serious in the wet and cold late autumn, winter and early spring. More common in young dogs.

Demodex:

Canine demodicosis is a skin parasitic disease in dogs caused by the Demodex mite. Also known as canine trichocystis or canine fat mange. It is a common and stubborn skin disease. Itching, and occasionally blackheads, pimples, and small red bumps may appear.

Usually it is localized demodicosis. In the early stage of infection, the affected area is hairless, and the skin becomes red, thickened and wrinkled

Itching, blackheads, papules and small red bumps may appear in some cases;

Pyoderma:

Pyoderma is a purulent skin disease caused by bacterial infection. It can be divided into two types: primary and secondary according to the cause.

Primary disease is mainly caused by the dog's own low defense function. After the pathogenic bacteria contaminate the skin, it invades the hair follicles and sebaceous glands to cause the disease;

Secondary disease is mainly caused by infection and suppuration bacteria after the natural protective barrier of the skin is destroyed. Itchy diseases such as mange disease, fleas, and insect bites can easily cause secondary infections. Frequent scratching will cause varying degrees of hair loss in the affected area. In severe cases, it can cause skin ulceration, a foul odor, and the sore surface to be covered with purulent secretions.

Pyoderma in young dogs: It mainly occurs in the hairless areas on the inside of the front and rear limbs, and is more common in the abdomen. Most of the symptoms are pustular rash;

Pyoderma in adult dogs: The site of onset is uncertain, and pustular rashes, small pustules and purulent secretions can generally be seen on the skin

Eczema:

A common skin disease refers to the inflammatory response of the epidermal cells of the dog's skin to allergenic substances. Hair falls off, and skin injuries such as papules, erythema, scabs, blisters, and rotten skin appear, as well as symptoms of heat, pain, and itching. Scratching and rubbing the dog's skin due to itching can aggravate the inflammation.

The hair in the affected area falls off, and skin injuries such as papules, erythema, scabs, blisters, and erosions appear on the skin, as well as symptoms of heat, pain, and itching.

Acute attack: The affected area appears as punctate or erythematous eczema with different shapes, and the dog's body is itchy.

When a dog has itchy skin disease symptoms, how to apply ointment to the dog?

First, fix the dog and remove 2-3 cm of hair around the affected skin;

Clean the affected area with saline;

Medicine application steps:

First, fix the dog and remove 2-3 cm of hair around the affected skin;

Clean the affected area with saline;

Use gauze to wipe clean the saline solution, or let it dry naturally;

Use the appropriate medicine and apply it evenly;

Take medicine 1-2 times a day until recovery;

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