Tuesday, August 23, 2005

Skin Infection: Pyoderma

pyoderma: "What is pyoderma?
Pyoderma is a bacterial infection of the skin. It is very common in dogs and uncommon in cats. Pyoderma frequently occurs as a secondary problem to some underlying condition or health problem.
What causes pyoderma?
Pyoderma is caused most frequently by Staphylococcus, a type of bacteria. Other bacteria, such as E. coli, also can invade previously infected skin. Several risk factors may cause an animal to be more likely to develop pyoderma. These risk factors include:
Parasites, such as fleas or mange mites
Allergies, such as flea, food, contact, or hereditary allergies
Hormonal disorders, such as hypothyroidism (low production of thyroid hormone by the thyroid gland)
Inadequate immune system, such as in young animals or those taking steroids
Animals with short coats, skin folds, or calloused skin
Trauma from grooming, scratching, or rooting in dirt or garbage
The dog has a deep pyoderma that may respond to treatment only partially and frequently recurs"
What are the signs of pyoderma?

Pyoderma frequently appears as a rash. It often affects the trunk, chin, bridge of the nose, and feet but it also may be generalized over the entire body. Skin lesions can have a sudden or gradual onset. The animal may or may not itch. If the underlying cause is an allergy, the itching usually comes before the rash. The rash or lesions on the skin may appear as small bumps, pus-filled pimples or pockets of pus, or blood-filled blisters. There can be crusting, scaling, and discolored spots on the skin. The skin may be inflamed (red and hot). Hair loss can occur, giving the animal a "moth-eaten" look.

If a hormonal disorder is the underlying cause, signs can include excessive thirst and excessive urination, pendulous abdomen, lethargy, weight gain, or signs of feminization in male dogs.

How is pyoderma diagnosed?

Pyoderma is diagnosed upon history and physical examination and by diagnostic procedures involving the skin.

--my bulldog had this many times until her diet was changed


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