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My cat has a head bump, losing weight, vomiting, and hair. Should I worry?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 3 years and 1 month old | 3 lbs

My cat has a worrisome bump on his head, has been losing weight rapidly and is vomiting as well as losing his hair

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1 Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on October 22nd, 2019

Given his symptoms, he should be physically examined by your veterinarian. A fine needle aspirate can be done in the clinic to collect samples for pathology. This may determine if the bump is something that needs to be addressed or simply monitored. Your vet may recommend lab work (CBC, chemistry panel, urinalysis) to diagnose the underlying cause for the vomiting and weight loss. These symptoms have multiple causes. Abdominal x-rays may also be recommended. Supportive care (IV or subcutaneous fluids, antibiotics, anti-emetics, etc.) can be administered as indicated.

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