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Cat has bald spot on chest with dark spots. Is it an emergency?

Updated On September 23rd, 2025

Pet's info: Cat | Norwegian Forest Cat | Female | spayed | 9 years and 6 months old | 8 lbs

Hello, My cat has developed a bald spot on her chest, where on the skin, distinct dark spots are visible. It started with some very strongly matted fur two weeks ago, but after I sorted that out, I noticed yesterday that there is the bald spot with the brown dots. She doesn't lick or scratch herself there, and in general does not seem at all distressed, but the fur does not seem to regrow. Is it a fungal infection? Does she need to go to the vet right away?

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1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on April 14th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! This is possibly due to allergies. It really comes down to figuring out what is causing her allergies so that they can be treated or the specific allergen avoided. A secondary infection is likely and also needs to be addressed. This is not an emergency though it would be best to see a veterinarian. There are many things that can cause allergies though in most cases they can be broken down into 3 big categories: flea, food and environmental allergies. Allergies are usually worked up in a stepwise fashion starting with flea allergies as this is the easiest and cheapest to take care of. If not on a flea preventative, then it would be a good idea to get started on one. If already on one then it would be a good idea to change to something else (there are many new products out in the market). If not improved in 1-3 months then it is time to move on and check for food allergies by switching to a novel diet (new protein and new carbohydrate). If that does not seem to be the issue then you are left out having to check for environmental allergies which require blood and/or skin tests. Allergies can be very frustrating to deal with at first but so rewarding at the end when we are able to treat them effectively!

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