Bloated devon kitten with diarrhoea...  

What are the symptoms of FIP?

Cats that have been initially exposed to the feline coronavirus usually show no obvious symptoms. Some cats may show mild upper respiratory symptoms such as sneezing, watery eyes, and nasal discharge. Other cats may experience a mild intestinal disease and show symptoms such as diarrhea. Only a small percentage of cats that are exposed to the feline coronavirus develop FIP-and this can occur weeks, months, or even years after initial exposure.

In cats that develop FIP, the symptoms can appear to be sudden since cats have an amazing ability to mask disease until they are in a crisis state. Once symptoms develop, often there is increasing severity over the course of several weeks, ending in death. Generally, these cats first develop nonspecific symptoms such as loss of appetite, weight loss, depression, rough hair coat, and fever.

There are two major forms of FIP, an effusive, or "wet" form, and a noneffusive, or "dry" form. Generally, cats will exhibit the signs of the noneffusive form FIP more slowly than the effusive form. Symptoms generally include chronic weight loss, depression, anemia, and a persistent fever that does not respond to antibiotic therapy.

The effusive form of FIP is characterized by an accumulation of fluid in the abdomen, or less commonly in the chest. Early in the disease, the cat may exhibit similar symptoms to the dry form, including weight loss, fever, loss of appetite, and lethargy. The wet form of the disease often progresses rapidly, and the cat may quickly appear pot-bellied due to fluid accumulation in the abdomen. When the fluid accumulation becomes excessive, it may become difficult for the cat to breathe normally.

FIP can be difficult to diagnose because each cat can display different symptoms that are similar to those of many other diseases.