Top +7 Why Is My Dog Scratching More After Flea Treatment Update This Month. Using a product like Frontline is usually very effective at killing fleas on the treated animals. You may have to take extra preventative measures like treating your home and yard for fleas.
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Its possible though that the fleas have caused a secondary problem such as some allergy symptoms or infection. It is good to hear that you are treating Dexter for fleas. It should settle down though after 24 hours.
+4 Article Of Fleas are definitely high up on the list of causes for an itchy dog. Full Update
Its possible though that the fleas have caused a secondary problem such as some allergy symptoms or infection. Using a product like Frontline is usually very effective at killing fleas on the treated animals. However lethargy is actually quite a common side-effect of many medications. Sometimes flea bites cause an allergic reaction called flea allergy dermatitis.