FIP Symptoms in Cats
One of the greatest challenges with FIP is that its early symptoms, especially in the dry form, are non-specific and easily confused with other conditions. However, certain combinations of symptoms should prompt an urgent veterinary visit.
General FIP symptoms
Most cats with FIP first show non-specific symptoms that may be confused with other diseases. The key is the persistence of symptoms and the combination of several of them.
- Persistent fever (39-40°C / 102-104°F) not responding to antibiotics
- Progressive weight loss
- Loss of appetite (anorexia)
- Lethargy and general malaise
- Dehydration
Wet FIP specific symptoms
- Swollen abdomen (ascites)
- Breathing difficulty (thoracic accumulation)
- Panting or open-mouth breathing
- Visibly distended flanks
- Yellowing of mucous membranes (jaundice)
Dry FIP specific symptoms
- Uveitis (eye inflammation)
- Pupils of different sizes
- Behavioral changes
- Seizures or tremors
- Incoordination (ataxia)
- Progressive kidney failure
Warning: act TODAY
If your cat has a persistent fever along with a swollen abdomen, breathing difficulties, rapid weight loss or neurological signs, go to the vet immediately. Every day counts with FIP.
What to do if I suspect FIP
- See your vet today. Ask for full blood work with biochemistry and a complete blood count.
- If there is abdominal fluid, ask for it to be analysed (total protein, cell count, Rivalta).
- Ask about the specific mutation PCR test on the fluid, if it is available in your country.
- Do not wait. Get in touch with support groups or with us for guidance through the process.
FAQ
Questions about FIP symptoms
Clear answers to the most common questions.
Yes, abdominal swelling has many causes including obesity, cardiac disease, liver disease, kidney problems, and FIP wet form. The distinction is established through bloodwork and analysis of the abdominal fluid. A yellowish, viscous, protein-rich fluid with a positive Rivalta test makes FIP highly probable. Only a vet can make this evaluation correctly.
Not always, though persistent or intermittent fever is one of the most frequent signs. In some phases of dry FIP, temperature may be within normal range. The absence of fever does not rule out FIP, particularly if other symptoms like weight loss, lethargy, and abnormal bloodwork are present.
It depends on the form. Wet FIP is typically diagnosed within days or weeks of the first symptoms because the signs are more obvious. Dry FIP can take months to diagnose because the symptoms are non-specific. If you suspect FIP, persist with your vet about running the specific tests to confirm or rule it out.
Does your cat have FIP?
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