M1A.27

Clinical Causes: Prolonged use of medications that elevate uric acid levels Medications containing diuretics such as thiazides and loop diuretics Certain immunosuppressants used in organ transplant recipients Low-dose aspirin, especially when used regularly Chemotherapy drugs that impair renal uric acid excretion Other medications that interfere with uric acid metabolism

Key Symptoms: Persistent swelling in the ankle and foot joints Redness and warmth around affected joints Chronic pain, especially during flare-ups Formation of tophi (urate crystal deposits under the skin) Limited joint mobility due to joint damage Repeated episodes of acute gout attacks progressing to a chronic state

Diagnosis Path: Diagnosis involves a combination of clinical assessment, medical history review, and laboratory tests. Key diagnostic steps include: - Blood tests to measure serum uric acid levels, which are often elevated - Joint fluid analysis under microscopy to identify uric acid crystals - Imaging studies like X-rays or ultrasound to detect joint damage or tophi - Reviewing medication history to identify drugs contributing to hyperuricemia Differentiating drug-induced gout from other inflammatory joint conditions is essential for accurate diagnosis.

Treatment Protocols: Managing drug-induced chronic gout involves multiple strategies: - Adjusting or discontinuing medications that contribute to elevated uric acid levels, in consultation with healthcare providers - Use of medications to lower uric acid, such as allopurinol or febuxostat - Implementing anti-inflammatory therapies like nonsteroidal anti-inflammatory drugs (NSAIDs) during acute flare-ups - Using colchicine for flare management - Lifestyle modifications including dietary changes to reduce purine intake - Maintaining adequate hydration to facilitate uric acid excretion - Regular monitoring of uric acid levels to guide therapy A comprehensive treatment plan aims to reduce joint inflammation, prevent tophi formation, and protect joint function.