Gout Flare-ups Affecting Multiple Joints
Patterns of Joint Involvement in Gout
- The American College of Rheumatology (ACR) guidelines recognize polyarticular gout, defined as either acute arthritis involving 3 separate large joints, or acute arthritis of 4 or more joints, with arthritis involving more than 1 "region" of joints 1
- Gout can evolve from monoarticular to asymmetrical polyarticular involvement, affecting multiple joints simultaneously, with the first metatarsophalangeal joint being a common initial joint affected, and as the disease progresses, multiple joint involvement becomes increasingly common as monosodium urate crystals accumulate in various joints throughout the body 1, 2
Factors Associated with Polyarticular Gout
- Longer disease duration and chronic hyperuricemia increase the risk of polyarticular involvement 2
- Tophi (accumulations of monosodium urate crystals) are often associated with polyarticular disease 3
Clinical Implications of Polyarticular Gout
- Polyarticular gout flares may be more severe and difficult to treat than monoarticular flares 4
- Treatment approaches for polyarticular flares may require more aggressive anti-inflammatory therapy 2
- The presence of polyarticular involvement may indicate more advanced disease and should prompt consideration of urate-lowering therapy 3, 5
Diagnosis of Polyarticular Gout
- Synovial fluid analysis remains the gold standard for diagnosis, with identification of monosodium urate crystals in joint aspirate 6, 7
- When multiple joints are involved, clinical algorithms that incorporate patient signs and symptoms may help with provisional diagnosis 8
- Imaging techniques such as ultrasound and dual-energy computed tomography (DECT) can be helpful in identifying crystal deposits in multiple joints 7, 8
Treatment Considerations for Polyarticular Gout
- Early treatment of acute flares is recommended regardless of the number of joints involved 4
- First-line options for acute flares include colchicine, NSAIDs, and corticosteroids, with combination therapy sometimes needed for polyarticular involvement 4
- For patients with recurrent polyarticular flares, urate-lowering therapy should be strongly considered to reduce the frequency and severity of future attacks 5