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My cat has red spots on his skin despite flea meds. How can I help?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Mediumhair | Male | 1 year and 4 months old | 6 lbs

Hi! Jack is a cat just over a year old. He is on monthly flea treatment for a flea allergy. The first picture is perhaps ten small circular red lesions in his armpit. They are dry and don't seem to bother him much but they have existed for a week or two. The second picture includes a few red circular lesions on his belly. They also dont seem to bother him but they seem to pop up quickly and look more irritated than those his armpit. How can I possibly treat these? Thanks for your help!

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1 Answer

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Answered By Jessica Keay, DVM

Veterinarian

Published on September 4th, 2018

I am sorry to hear about Jack! I would be concerned these could be a bacterial or fungal infection of the skin, and possibly a condition in cats called eosinophilic plaques or eosinophilic granuloma syndrome, which can be incited due to an allergy and usually resolves with steroid treatment. I would recommend bringing Jack in to his vet for an examination of the area.

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