M12.361

Clinical Causes: The exact cause of palindromic rheumatism remains unknown. It is believed to involve an abnormal immune response, where the body's immune system mistakenly attacks its own joint tissues. Genetic factors may play a role, as some individuals have a family history of autoimmune diseases. Environmental triggers such as infections or stress may contribute to episode onset. Other underlying autoimmune conditions, such as rheumatoid arthritis, can sometimes present with similar symptoms.

Key Symptoms: Sudden onset of joint pain that peaks within hours and may last from a few hours to several days. Swelling and redness in the affected joint, often including the right knee in this case. Stiffness, especially after periods of rest. Episodes tend to recur intermittently over weeks or months. In some cases, symmetrical joint involvement or additional joints may be affected. Patients might experience fatigue or mild systemic symptoms during episodes.

Diagnosis Path: Physical examination to assess joint swelling, redness, and range of motion. Blood tests to identify markers of inflammation and autoimmune activity, such as rheumatoid factor (RF) and anti-CCP antibodies. Imaging studies like X-rays or ultrasound to evaluate joint health and exclude other causes of joint pain. Monitoring the pattern of symptoms over time to confirm episodic nature. Additional tests may be conducted to rule out infections or gout.

Treatment Protocols: Nonsteroidal anti-inflammatory drugs (NSAIDs) to relieve pain and reduce inflammation during episodes. Corticosteroids may be prescribed for more severe or frequent flare-ups. Disease-modifying antirheumatic drugs (DMARDs), like methotrexate, might be used in persistent cases or if progression to rheumatoid arthritis occurs. Lifestyle modifications such as regular exercise, a balanced diet, and weight management can help reduce joint stress. Physical therapy may improve joint function and strength. Regular medical follow-up to monitor disease progression and adjust treatment plans accordingly.