Distinguishing immune-mediated from infectious arthritis in dogs determines treatment direction with critical welfare implications for affected animals.
Dogs with polyarthritis suffer severe multi-joint pain causing reluctance to move, fever-associated malaise, and dramatically reduced quality of life. The diagnostic challenge is significant because both conditions appear similar clinically, but treatment is fundamentally different - immunosuppression worsens infection while antibiotics alone are insufficient for IMPA. Joint fluid analysis enabling accurate diagnosis is a critical welfare intervention that prevents prolonged ineffective treatment. Once correctly diagnosed and appropriately treated, most dogs with IMPA show dramatic improvement in comfort and mobility within days, revealing the extent of their previous suffering. Regular monitoring guides safe dose reduction while watching for relapse.