M06.051

Clinical Causes: Immune system malfunction mistakenly attacking joint tissues Genetic predisposition increasing susceptibility Environmental factors such as smoking or infections triggering immune response Hormonal influences that may contribute to autoimmune activity Absence of rheumatoid factor indicating a seronegative form of RA

Key Symptoms: Persistent pain in the right hip, especially with movement Swelling and tenderness around the hip joint Stiffness, particularly in the morning or after periods of inactivity Reduced range of motion in the right hip Possible warmth or redness over the joint Fatigue and general feeling of illness in some cases Difficulty walking or performing daily activities due to joint discomfort

Diagnosis Path: Diagnosis typically involves a combination of clinical evaluation and medical tests. Physicians may perform physical examinations to assess joint tenderness, swelling, and range of motion. Blood tests are used to rule out other causes and may include inflammatory markers like ESR and CRP, as well as tests for rheumatoid factor and anti-CCP antibodies. Imaging studies such as X-rays or MRI scans help evaluate joint damage and inflammation specific to the right hip. The absence of rheumatoid factor characterizes this as seronegative rheumatoid arthritis.

Treatment Protocols: Management of rheumatoid arthritis without rheumatoid factor aims to control inflammation, relieve symptoms, and prevent joint damage. Common approaches include: - **Medications:** Disease-modifying antirheumatic drugs (DMARDs) like methotrexate, biologic agents, and corticosteroids - **Physical therapy:** Exercises to maintain joint flexibility and strength - **Lifestyle modifications:** Maintaining a healthy weight, applying heat or cold to reduce pain, and using assistive devices if necessary - **Surgical options:** In severe cases, procedures such as joint replacement may be considered Regular medical follow-up is essential to monitor disease activity and adjust treatment accordingly.