Why is my dog still itching, losing fur, and has blisters after fleas?

Question

My dog is losing his fur, has small blisters, and itches a lot. This started after we noticed fleas on him, treated him, and got rid of the fleas. Pet's info: Dog | Mixed Breed | Male | neutered | 1 year and 1 month old | 11 lbs

Ricardo Fernandez, DVM · Accepted Answer

Hi there! Thanks for using Petco Pet Education Center, formerly Petcoach! This is common with flea allergy dermatitis. It is great that you have done what needed to control the fleas. However, it sounds like Cooper is still having the clinical signs of itchiness and allergy. The reason is that even if you do not see any fleas, they could still present in small amounts. It only takes 1 flea to cause allergy signs. The other thing to consider is that usually secondary bacterial infections which happen secondary to the flea allergy can cause a great amount of itch and they need to be treated appropriately along with the fleas. I advice that you have him evaluated by your veterinarian to start therapy for the likely secondary infection and further therapy for fleas if needed based on examination. Good luck!

Why is my dog still itching, losing fur, and has blisters after fleas?

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