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My kitten has severe diarrhea, weight loss, tests clean. What's next?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered | 5 months and 22 days old | 4.2 lbs

Watson is actually a bit over 6 months per his vet. He's had fluctuating severe weight loss and a lack of appetite ( that I'm sure doesn't help). He has explosive diarrhea with a greasy, murky substance, persistently and often as well. All his parasite tests - including special snap tests - and his bloodwork have come back clean. But he's not thriving. What's next and what can/should I do

1 Answer

Most Helpful Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on September 29th, 2018

That is a very difficult situation. You may talk to your vet about treating for giardia (even if the test was negative), IBD, food allergies, an aggressive dewormer, running a GI panel, or referral to a specialist in internal medicine. The next step may be biopsies through exploratory surgery or endoscopy. Many cats with diarrhea of unknown cause will respond to a prescription hypoallergenic diet.

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