Companion Animals

Cat Immune-Mediated Haemolytic Anaemia

Immune-mediated haemolytic anaemia (IMHA) in cats causes severe anaemia requiring prompt diagnosis and immunosuppressive treatment to prevent life-threatening consequences.

Key Facts

Feline IMHA is less common than in dogs but causes rapid red blood cell destruction
Signs include pale or yellow gums, weakness, rapid breathing and collapse in severe cases
A Coombs test confirms immune-mediated destruction of red blood cells
High-dose prednisolone is first-line treatment, with additional immunosuppressants for refractory cases
Blood transfusion may be needed as bridging therapy while immunosuppression takes effect

Welfare Considerations

IMHA causes acute severe suffering from anaemia and requires urgent veterinary intervention. Prompt diagnosis and immunosuppressive treatment significantly improve welfare outcomes.

What You Can Do

Seek emergency veterinary care immediately for any cat with pale or yellow gums
Follow immunosuppressive treatment protocols precisely and do not discontinue medication early
Schedule regular follow-up blood tests to monitor response and adjust treatment