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)