M1A.219

Clinical Causes: Long-term use of medications that increase uric acid levels, such as diuretics (water pills), aspirin, or immunosuppressants. Underlying health conditions like kidney disease, which impair uric acid excretion. Dietary factors, including high consumption of purine-rich foods like red meats and shellfish, although these play a secondary role when medication-induced. Genetic predispositions that affect how the body processes uric acid.

Key Symptoms: Persistent shoulder pain and stiffness. Swelling and redness around the shoulder joint. Limited range of motion in the affected shoulder. Recurring flare-ups that may become more frequent over time. Possible formation of tophi—firm lumps of uric acid crystals—around the shoulder area. Discomfort that worsens with activity or pressure on the shoulder.

Diagnosis Path: Comprehensive medical history review, focusing on medication use and symptom duration. Physical examination of the shoulder for swelling, tenderness, and range of motion. Joint fluid analysis to detect uric acid crystals under a microscope. Blood tests measuring serum uric acid levels, which may be elevated. Imaging studies such as X-rays or ultrasound to identify joint damage or crystal deposits. Assessment for other possible causes of shoulder pain to rule out alternative diagnoses.

Treatment Protocols: Medications to manage inflammation and reduce pain, including non-steroidal anti-inflammatory drugs (NSAIDs). Uric acid-lowering therapies such as allopurinol or febuxostat to decrease uric acid production. Adjustments to medications that elevate uric acid levels under medical supervision. Lifestyle modifications like dietary changes to reduce purine intake, increased hydration, and weight management. Physical therapy to improve shoulder mobility and strength. Regular monitoring of uric acid levels to prevent future flare-ups. In some cases, corticosteroid injections may be used to quickly alleviate severe inflammation.