Companion Animals

Immune-Mediated Polyarthritis in Dogs: Welfare and Management

Welfare guide for canine immune-mediated polyarthritis -- a painful episodic condition requiring careful long-term management.

Key Facts

Immune-mediated polyarthritis is caused by immune complex deposition in synovial joints
Affected dogs show fever, lethargy, generalised stiffness, and reluctance to walk
Multiple joints are typically affected simultaneously distinguishing it from osteoarthritis
The condition is episodic -- dogs may appear to recover and then relapse
Diagnosis requires joint fluid analysis showing neutrophilic inflammation without infection
Corticosteroid immunosuppression is the mainstay of treatment and is highly effective
Long-term management requires dose tapering with monitoring for relapse
Quality of life during acute episodes is severely compromised -- pain management is essential

Welfare Significance

Immune-mediated polyarthritis causes intense generalised joint pain affecting the whole body simultaneously. The episodic nature means owners may underestimate the underlying disease burden between flares. Effective immunosuppression dramatically improves quality of life, but careful monitoring and dose management are required.

What You Can Do

Seek veterinary assessment for any dog showing sudden-onset generalised stiffness and fever
Ensure adequate pain management during acute episodes alongside immunosuppression
Follow the dose tapering schedule carefully -- do not stop steroids abruptly
Monitor for relapse -- keep a diary of stiffness and activity level to track trends