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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?

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

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!

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17Pet Parents found this answer helpful

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