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My cat has yellowish-brown lumps on her arm. What could they be?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | unspayed

My cat has gotten a few yellowish brown lumps on her right arm, what could it be? She's licking it a bit, but she seems to be in perfect health otherwise.

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Answered By Jeffrey Milner

Veterinarian

Published on October 6th, 2018

If Pretinha is licking the area more than normal, it is probably bothering her (whether or not it is painful, or just annoying, is hard to say). I see the bumps to which you've referred. Lumps and bumps of unknown origin are impossible to diagnose without feeling them, and typically collecting a cellular sample. Overall, lumps fall into one of the general categories: -Abscess or infection -Mass or tumor -Cystic structure -Bug bites -Allergic reactions Determining which of these is the culprit will guide the course of therapy. In the meantime, you are going to want to prevent PRetinha from causing any self-mutilation. You can obtain a proper e-collar from a vet or online, or you can make a homemade one. There are many videos instructing just how to do this. Since she is doing great otherwise, there is nothing pressing about this. However, if her level of discomfort grows I would get her into the vet for assessment sooner than later. You can also monitor her temperature at home with a rectal thermometer (you might need a second hand to help out) to make sure there is no evidence of an infection. Anything above 102.5 is considered high. Hope this makes sense.

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