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My cat had FPV, now has diarrhea & vomiting. Is FPV causing this?

Updated on September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | unneutered | 4 lbs

Help. My cat was diagnosed with feline panleukopenia virus on 4/10/17 but has been showing symptoms since 2/10/17 therefore it's 10 days already. His symptoms were vomitting, anorexia and dehydration. On 6/10 until today he was eating normal but this morning I saw him threwing up hairball and there was diarrhea. But he eats like normal, although i change his diet. Shud I be alarmed that FPV is causing this? Because Drs says if he survives after 7 days, his body develop immunity towards It

2 Answers

Most Helpful Answer

Jenna Beyer, DVM, MBA, cVMA

Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on October 10th, 2017

If Mochi truly had Panleukopenia Virus this spring, then it is extremely unlikely he would ever get it again. However, that doesn't mean he couldn't get some other virus or bacteria that could cause vomiting and diarrhea. If you changed his diet before the vomiting and diarrhea started, then it may be the food switch. You may have changed foods too suddenly and caused an upset stomach, or Mochi may have a dietary intolerance of food allergy to the new food. Other possible causes for diarrhea and vomiting include stress colitis, IBD, GI blockage, intestinal parasites, among a few other things. If the vomiting and diarrhea persist for longer than 24 hours, or if Mochi develops a poor appetite or lethargy, then he should be evaluated by a veterinarian.
Vote Icon1Pet Parents found this answer helpful

Related Answers from Veterinarians

  • Answered By Laura Johnson VMD

    Veterinarian

    Published on October 4th, 2017

    HI, thanks for using Petco Pet Education Center, formerly Petcoach! I am so sorry that Mochi is so sick!

    Panleukopenis virus can cause severe vomiting and diarrhea. Mochi may not be defecating because he hasn't eaten enough to produce stool. With that being said FPV can mimic intestinal obstructions.

    Mochi is very sick and I think what he needs is to be hospitalized and be put on IV fluids and IV medications. He is likely very dehydrated. There are many anti-emetics that can be given together IV. The Vet then can also take an X-ray of his belly or have an ultrasound performed to be sure there isn't an intestinal obstruction or even an intussusception present that would require surgery. Also be sure a fecal parasite test has been done, a lot of cats with FPV also have worms which can make them sicker. Also be sure general blood work has been performed.

    I hope this helps and I wish Mochi the best!

    Vote Icon

    1Pet Parents found this answer helpful

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