Pimples From Dog Skin Infection (Pyoderma)
Table of Contents
A bacterial dog skin infection is usually caused by some underlying disease or Staphylococcus intermedius which is a bacteria that infects canine skin. Pyoderma is characterized as being superficial, or only affecting the top layer of skin, or "deep" involving lower layers of the skin.
Dog skin pimples that are the result of a bacterial skin infection
are called pustules (filled with pus) or papules (raised pimples on the
There is an above average incidence in German Shepherds and short
coated dogs with skin folds.
Dog Ear Pimples
Bacterial dermatoses mycobacteria in the ears of a dog
Causes of bacterial skin infections in dogs include:
- Broken skin or injury from scratching, trauma or grooming
- Foreign body under the skin
- Impaired circulation
- Immune system problems
- Change in bacterial flora
- Prolonged skin exposure to moisture (such as in dogs with skin folds)
- Hormonal disorders (hypothyroidism)
- Forunculosis (formation of boils)
Symptoms of infection include skin pimples (pus filled, hard), crusted skin, seborrhea (dandruff) and alopecia (hair loss) on legs.
A skin scraping
is used for further evaluation
under a microscope. For pimples sometimes a needle is used to collect
skin material (aspiration of nodules). The veterinarian will need to
differentiate a bacterial infection from other possible causes such as
allergy (atopy/seasonal, food, fleas),
Antibiotics are used for a minimum of 7 to 10 days. Anti-bacterial
prescription anti-biotics and
shampoos that contain Chlorhexidine such as Duoxo
are used to treat skin infections.
Routine use of shampoos may help dogs that have a recurring
topical applied to the skin that contains benzoyl peroxide (2%) could
also be of benefit.
If lesions don't heal properly or if they frequently reoccur, bring them to the attention of a veterinarian for further investigation and to check for diseases such as hypothyroidism.
References Dog Skin Infection:
Source: R.S. Mueller, Department of
Clinical Sciences, College of Veterinary Medicine and Biomedical
Colorado State University