What causes black scabs and sores with fur loss on my dog's skin?

Question

Hi my dog has cone up with some sores on her back, near her leg and ear (see attached) do to u have some ideas as to what this could be? The one on her back, the fur has come away, and there is a black scab around the edge of it. She is not in any pain and is up to date with flea treatment. Thanks. Pet's info: Dog | Mixed Breed Large (61lb +) | Female | unspayed | 1 year and 5 months old

Dr. Elizabeth · Accepted Answer

Daisy may be having an allergic reaction. Allergies can be to contact with a substance, fleas, food or environmental. Sometimes dogs can get a random infection. I would search her closely for fleas. Topical flea products can still allow fleas to live long enough to cause a reaction. Oral flea products are much better because the fleas die faster. Otherwise, I would take her into the vet for treatment (since it sounds like she has many lesions). Likely these are bacterial in nature but they are circular so ringworm (which humans can get) is always a potential. Once treatment is completed, watch Daisy for reoccurrence. If it comes back, then you start looking more closely at allergies. I hope this helps.

What causes black scabs and sores with fur loss on my dog's skin?

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