Why Dogs Develop Pyoderma
📝 Summary
Pyoderma is a bacterial skin infection that forms pus-filled lesions, split into superficial and deep forms, and it usually follows parasites, allergies, hormones, or a weak immune system. Keeping the coat clean and dry, staying on top of parasite control, and avoiding over-bathing all help prevent it.
1 What Causes It
Parasites: skipped deworming lets mites such as Sarcoptes or Demodex multiply and trigger pustules.
Allergies: long-term exposure to allergens can produce allergic pyoderma.
Hormonal: excess adrenal hormone or an underactive thyroid disturbs the skin and opens the door to infection.
Weak immunity: a one-note diet or a congenital immune defect leaves the dog unable to resist environmental bacteria.
Human factors: a dirty, damp environment or over-frequent bathing breaks down the skin’s normal barrier, so even a small cut easily lets bacteria in.
2 What It Looks Like
In puppies, lesions sit on the hairless inner legs and belly, usually as pustules.
In adults the location varies; pustules, small abscesses, and discharge appear, most often as secondary infection with folliculitis, cracked skin, and dry pyoderma.
Severe cases progress to skin ulceration with a foul odor and pus-covered wounds.
3 Prevention
Build up a puppy’s constitution and skin resistance, and keep the coat dry.
When switching shampoos or diets, choose low-allergy products, and consult a vet at the first sign of trouble.
Keep up regular external parasite control against fleas, ticks, and lice.
Groom sensibly — for long-coated or heavily folded dogs, check and clean regularly.
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