• Rheumatoid Factor - Read about the rheumatoid factor (RF) blood test used for the diagnosis of rheumatoid arthritis, lupus and sarcoidosis. Elevated results, or high levels, indicate severe disease.
• Rheumatoid Arthritis - Learn more about rheumatoid arthritis, an autoimmune disease that causes chronic joint inflammation, which has symptoms that include stiffness, fever, muscle and joint aches, loss of appetite, and fatigue. Treatment of rheumatoid arthritis incorporates the use of first-line drugs (aspirin and corticosteroids for pain and inflammation) and second-line drugs (methotrexate and hydroxychloroquine to prevent joint destruction and promote remission).
• Arthritis - Arthritis symptoms include pain, joint inflammation and swelling. Get the facts on arthritis types, causes, research information, statistics and diagnosis.

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