How is rheumatoid arthritis diagnosed?

Rheumatic arthritis can be definitively diagnosed through a comprehensive evaluation that includes observing typical symptoms, performing blood tests, measuring inflammatory markers, conducting joint imaging studies, and integrating the patient’s medical history.

If you experience migratory joint swelling and pain, persistent low-grade fever, or fatigue, seek prompt medical evaluation and treatment.

1. Observation of typical symptoms: Multiple joints exhibit migratory pain, redness, and warmth; these symptoms may alternate among major limb joints. Joint discomfort typically worsens after exposure to cold or physical exertion, and joint mobility is variably restricted during active episodes.

2. Blood testing: Serum testing for antibodies associated with *Streptococcus* infection helps determine whether a prior streptococcal infection has occurred. Such infection is the primary trigger for this type of arthritis, and abnormal antibody titers serve as an important diagnostic criterion.

3. Inflammatory marker assessment: Measurement of erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) helps evaluate systemic inflammatory activity. During rheumatic arthritis flares, these markers rise significantly and gradually normalize as the disease enters remission.

4. Joint imaging studies: Radiographic examination of swollen or painful joints assesses bony architecture and soft-tissue status. These imaging studies help exclude other joint disorders—such as osteophyte formation or traumatic joint injury—and aid in differentiating rheumatic arthritis from other forms of inflammatory arthropathy.

5. Integrated clinical history assessment: Review recent history of pharyngitis, tonsillitis, or fever—common manifestations of preceding streptococcal infection. By synthesizing findings from all diagnostic tests and clinical features—and excluding differential diagnoses such as rheumatoid arthritis and gouty arthritis—a definitive diagnosis can be established.

In daily life, maintain adequate warmth for all joints, avoid exposure to rain or cold, and proactively prevent upper respiratory tract infections. Adhere to regular sleep-wake cycles and engage in moderate physical activity to enhance overall physical resilience, reduce susceptibility to streptococcal infection, and lower the risk of recurrent joint inflammation.