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Why is my cat suddenly losing fur in pink patches on her sides?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Female | spayed | 4 years and 7 months old

my cat suddenly has 2 patches of missing fur in her sides and it's pink.

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1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on November 6th, 2018

Hi there! Thanks for using Petco Pet Education Center, formerly Petcoach! There is a variety of reasons that can explain alopecia or hair loss. The causes can easily be differentiated by the clinical signs associated with it and the physical exam findings. If Bella is only showing some hair loss without scratching or overgrooming then it could conditions such as alopecia areata that can affect cats and usually resolves on its own. If there is evidence of scratching and you start noticing some redness or irritation associated with it, then other conditions such as allergies are possible. If you notice her overgrooming herself in that area then it could be something like psychogenic alopecia which is more of a behavioral issue. I think that since she is not having overt clinical signs and it is mostly hair loss, I think it is possibly transient and could resolve on its own. You can monitor this closely and if it does not resolve or it worsens then have her examined by your veterinarian. Good luck!

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