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Is a hard lump under my cat's chin normal after recent vaccinations?

Updated on September 23rd, 2025

Pet's info: Cat | Domestic Longhair | Male | neutered | 1 year and 5 months old | 7 lbs

Hard lump under cats chin. Suddenly grew. Cat got vaccines on the 20th of Feb.

1 Answer

Most Helpful Answer

Answered By Destini R. Holloway, DVM

Veterinarian

Published on February 22nd, 2019

Poor girl. Due to her age a mass here would be less likely as the cause for this hard lump. This may be an abscess or even a cyst. It is difficult to tell without feeling it in person, however, if it does not go down on its own within a few days to a week, then I would recommend having your vet check it out further. If it is an abscess, then cats typically will start to act ill (decreased appetite, low grade fever, lethargy) after a few days, in which case the abscess would need to be drained by your vet and then KitKat would need a short course of antibiotics to get things to heal well.

Otherwise, I would recommend monitoring this for now to see what happens.

I hope that Kit Kat's strange lump heals well soon! : ) Best wishes and take care.

6Pet Parents found this answer helpful

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