My dog has crusty skin, pimples, and fleas. Is it an allergy?

Question

Dear vets, Before Christmas, our 3 year old dog had two small pimple like lumps on her back. We went to the vet and told there was flee dirt. Anti inflamitories and anti biotics were given (we use MiPet Endectrid monthly). After Christmas, the two small lumps and changed into a flatter but larger crusty area. We were given anti fungal shampoo. Right now, the crusty area is larger and she has 1 raised and tall pimple. We have found flee dirt. Black pepper. Please help. Pet's info: Dog | Mixed Breed | Female | spayed | 13.2 lbs

Dr. Melanie, BVSc MS · Accepted Answer

Daisy definitely has fleas if she has flea dirt, and I can give you a treatment program for that. It sounds like the MiPet Endectrid isn't working to treat her fleas if she still has flea dirt, and she likely needs a stronger product to kill all her fleas. First, I would give her Capstar. It's a one time pill that starts killing fleas within 30 minutes. Then follow up with a spot on treatment, such as Advantage or Revolution. This is a treatment that has to be used once a month. You will also have to disinfect the environment. Wash her bedding in hot soapy water, and vacuum the furniture and carpet surfaces. You can use a spray to kill fleas in the house, such as Indorex, or a flea bomb would work well to kill the fleas in the home. As for the crusty spot, try the flea treatment program I gave you, and see if that helps with it. It could be that Daisy has a flea allergy, and may need steroids or antihistamines to treat it, and I would speak to the vet about the possible use of these medications on her.

My dog has crusty skin, pimples, and fleas. Is it an allergy?

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