My dog had fleas, now has a rash and won't stop itching. What to do?
Ouch, poor Rose! Some dogs are allergic to fleas and can become intensely itchy, which can then lead to the development of a bacterial skin infection, which only amplifies the itch cycle. You did the right thing by starting Rose on flea prevention (K9 Advantix II is my favorite OTC topical), but a flea collar is unnecessary. Be sure to continue using topical flea prevention monthly to prevent flea eggs from hatching to larvae and reproducing. With the redness on Rose's skin, it is highly suspicious that she has developed a skin infection, which requires antibiotics for resolution. There aren't any over the counter medications available to to help with her itching or skin infection, so Rose will need to go to the vet. The vet will be able to prescribe the best medication (likely antibiotics and anti-itch medications) for Rose to remedy this issue. I hope that she feels better soon!
Updated on September 23rd, 2025