My kitten has a painless lump after vaccination. Is it an emergency?
Updated On September 23rd, 2025
Pet's info: Cat | Domestic Shorthair | Female | unspayed | 2 months and 29 days old
My 13 week old kitten has a lump between her shoulder blades. It appears to be painless and can move about under the skin. She had her first vaccination 3 weeks ago. What could it be? Is this an emergency?
2 Answers
Most Helpful Answer
Published on November 18th, 2017
Great question! This lump could be a localized reaction to the vaccine if the lump is in the area where the vaccine was given. Other options could be a cyst or a benign tumor. Given it's not painful and if she is otherwise acting normally, this isn't an emergency. Keep an eye on this lump, and if it doesn't go down over the next couple of days or gets bigger, then I would have Poppy seen by a vet. Good luck, I hope this helps!
17Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on September 29th, 2019
If she is acting otherwise normally I would not be alarmed. This is a local reaction that should resolve on it's own in a few weeks. If it does not resolve, or she starts to act ill, then she will need to see a vet.
1Pet Parents found this answer helpful
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