What is the most common organism involved in canine superficial pyoderma?
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Superficial pyoderma is common in dogs and greater than 90% of cases are caused by Staphylococcus pseudintermedius. S. pseudintermedius (formerly classified as as S. intermedius) is a normal part of canine skin flora.
Infection develops after trauma damages skin integrity (i.e., from itching, parasites) or immune issues. Investigate and Tx the underlying cause to prevent recurrence.
Pyoderma Tx is topical with antibacterial shampoos and antibiotics. Deeper or wide-spread infections may also require oral antibiotics.
Dogs occasionally have gram-negative bacteria, including Escherichia coli, as secondary invaders. Pasteurella multocida is common in cats w/ pyoderma, but uncommon in dogs. Sarcoptes scabiei var. canis (less commonly, var. vulpes) causes sarcoptic mange. Microsporum canis is responsible for dermatophytosis (ringworm).
