M06.04

Clinical Causes: Autoimmune response where the immune system mistakenly attacks the synovial membrane in the joints Genetic predisposition influencing immune system sensitivity Environmental factors such as smoking or exposure to certain pathogens that may trigger immune reactions Hormonal influences, particularly in women, increasing susceptibility Absence of rheumatoid factor, which differentiates this condition from other rheumatoid diseases

Key Symptoms: Joint pain that worsens with activity and improves with rest Swelling and tenderness in the affected hand joints Morning stiffness lasting more than 30 minutes Symmetrical joint involvement, especially in finger joints, wrists, and knuckles Joint warmth and redness in affected areas Reduced grip strength and difficulty performing fine motor tasks Possible joint deformities with prolonged disease

Diagnosis Path: Diagnosis involves a combination of clinical evaluation, blood tests, and imaging studies. Specific methods include: - Physical examination assessing joint swelling, tenderness, and range of motion - Blood tests to exclude rheumatoid factor and check for inflammation markers like ESR and CRP - Imaging techniques such as X-rays, ultrasound, or MRI to identify joint erosion or inflammation - Differentiating this form from rheumatoid arthritis with positive rheumatoid factor to tailor treatment strategies

Treatment Protocols: Management aims to control symptoms, reduce inflammation, prevent joint damage, and maintain function. Typical approaches include: - Non-steroidal anti-inflammatory drugs (NSAIDs) to relieve pain and inflammation - Disease-modifying antirheumatic drugs (DMARDs) such as methotrexate to slow disease progression - Corticosteroids for short-term inflammation control - Physical therapy to improve joint mobility and strength - Occupational therapy to assist with daily activities and adapt to joint limitations - Regular monitoring and follow-up to adjust treatment plans It is essential to work closely with healthcare providers to develop a personalized management plan suited to the disease severity and individual needs.