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Why is my cat running in circles with crusty bumps on her tail?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 10 lbs

My 10yr old female cat has these crusty bumps on back base of tail.she does not scratch but when cleaning herself she suddenly runs around in circle like been bitten or spooked for a week now..not herself. I have 4 other cats all indoors...Help

1 Answer

Most Helpful Answer

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Answered By Elva Ma DVM

Veterinarian

Published on January 23rd, 2018

Hello, and thank you for your question. The bumps on the tail could be related to parasites such as fleas, or a bacterial or fungal infection, or a skin allergy. Her behaviour of running around is likely due to itchiness. I would recommend a vet visit within the next few days. They can examine the skin for parasites, and potentially perform tests such as a skin scraping or fungal culture. If a bacterial infection is suspected, they can prescribe antibiotics. At minimum, anti-itch medication can be prescribed while they figure out the underlying cause. For now, you can try bathing the affected area with a gentle aloe and oatmeal shampoo. Rinse well with lukewarm water and pat dry. I'd also advise putting an e-collar (cone) on her head to prevent her from further licking or biting the skin and making it worse. I hope this helps, and that Bling feels better soon!

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