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.
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.