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Question:

Cat with fever of unknown origin x 6 days, multiple vets seen, no answers

I'm feeling really overwhelmed and could use some advice or support from anyone who's been in a similar situation. My sweet kitty, Luna, has been running a high fever for the past six days, and I’m just at my wit's end. I’ve taken her to three different vets already, but we still don’t have any answers as to what’s causing it. They’ve run a bunch of tests—blood work, X-rays, you name it—and everything keeps coming back inconclusive. It's so hard seeing her like this because she’s usually such a lively little ball of energy, but now she just sleeps all day and barely touches her food. I feel so helpless watching her suffer, not knowing how to make it better. If anyone’s been through something similar or has any suggestions on what I might try next, I’d really appreciate your help. Thanks in advance!

Answer:

Hello there,

I'm sorry to hear that your kitty has been feeling under the weather. I understand how worrisome it can be when you don’t have a clear answer, especially after seeing multiple vets. A fever of unknown origin (FUO) can be tricky. It generally means there’s an underlying issue that hasn't been pinpointed yet.

Potential causes could include infections (bacterial, viral, or fungal), immune-mediated diseases, or less commonly, certain types of cancer. Since these can vary widely, it often requires a comprehensive approach involving diagnostic tests like blood work or imaging studies.

At home, ensure that your cat is hydrated and comfortable. Encourage them to drink by offering fresh water or a bit of broth. You can also try gently wiping them down with a damp cloth to help manage their body temperature.

Watch for signs like lethargy, loss of appetite, vomiting, or difficulty breathing, which could indicate a more serious issue needing immediate attention.

Since you've already consulted several vets without a clear answer, consider booking a video consult with Dial A Vet. Sometimes a fresh perspective or a second look at the medical records can make a difference. We're here to support you and your furry friend.

Take care!

Answered by

Louise - Senior Veterinary Nurse, Dial A Vet

June 17, 2025

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The "Ask a Vet" forum on Dial A Vet offers general information and helpful tips on pet health, but it's not a substitute for professional veterinary care. The advice here doesn't create a veterinarian-client-patient relationship, and our vets can't diagnose or treat your pet remotely. For emergencies or specific medical concerns, always contact your local veterinarian immediately. Your pet's health is unique, and decisions should only be made after consulting with a qualified professional. By using this forum, you acknowledge these limitations and agree to seek in-person veterinary advice for all your pet's health needs. View our content guidelines.
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