MSD Manual

Please confirm that you are a health care professional

honeypot link
Signs of Feline Infectious Peritonitis

Signs of Feline Infectious Peritonitis

  • Progressive distention of the abdomen due to fluid buildup

  • Lung involvement and difficulty breathing

  • Fever lasting 2 to 5 weeks

  • Loss of appetite

  • Weight loss

  • Depression

  • History of vague illness, including longterm fever, malaise, weight loss, and occasionally major organ system failure (kidneys, liver)

  • Eye and central nervous system signs may occur simultaneously or independently

  • About 50% of all cats have signs related to involvement of abdominal organs (kidney, liver, spleen, pancreas, lymph nodes)