Dog has swollen marks despite flea prevention. What are they and how to heal?

Question

Our dog is on a heart worm flea preventive combo and our vet said it would be a few months before she'd be flea free. Just noticed a few marks that have swollen. Going to call the vet in the morning, but just worried what they are and how to heal them. Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | unspayed | 1 year and 5 months old | 15 lbs

Ricardo Fernandez, DVM · Accepted Answer

Thanks for using Petco Pet Education Center, formerly Petcoach! These skin lesions are likely pyoderma or superficial bacterial infection. Your veterinarian can prescribe an antibiotic and a medicated shampoo to treat them. The main thing is checking to see if there is any indication that she still have some evidence of fleas that could be causing these secondary bacterial infections in which case your veterinarian could consider something like Capstar to get rid of as many fleas as possible at once. Good thing is that these lesions are likely to resolve uneventfully. Good luck!

Dog has swollen marks despite flea prevention. What are they and how to heal?

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