M10.20

Clinical Causes: Use of certain medications such as diuretics (especially loop and thiazide diuretics) Medications that increase uric acid production, including low-dose aspirin and immunosuppressants Chemotherapy drugs that cause cell destruction leading to increased uric acid release Pyrazinamide and ethambutol used for tuberculosis treatment Certain immunosuppressive drugs used after organ transplants Excess alcohol, which can interfere with uric acid excretion when combined with these medications

Key Symptoms: Sudden onset of intense joint pain, often in the big toe, ankles, or knees Swelling and inflammation in the affected joint(s) Redness and warmth around the joint Limited joint mobility during flare-ups Duration of attacks typically ranges from a few days to a week if untreated Possible recurrence with continued exposure to triggering medications

Diagnosis Path: Diagnosis of drug-induced gout involves a combination of medical history, physical examination, and laboratory tests. Key diagnostic steps include: - Reviewing medication history to identify potential culprits - Blood tests measuring serum uric acid levels - Joint fluid analysis via aspiration to detect urate crystals - Imaging studies like ultrasound or dual-energy CT scans to visualize crystal deposits It is important to distinguish drug-induced gout from other types of arthritis and joint conditions to ensure accurate treatment.

Treatment Protocols: Managing drug-induced gout involves several strategies: - Discontinuing or adjusting the medication that contributes to elevated uric acid levels, under medical supervision - Using medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) or corticosteroids to reduce inflammation and pain during attacks - Employing uric acid-lowering therapies like allopurinol or febuxostat to prevent future episodes - Lifestyle modifications, including maintaining hydration, reducing alcohol intake, and avoiding high-purine foods - Close monitoring of uric acid levels and joint health with regular follow-up It's essential to collaborate with healthcare providers to balance the necessity of the causative medication with the management of gout symptoms.