Because both rheumatoid arthritis and osteoarthritis cause joint pain and stiffness, the two conditions are sometimes mistaken for one another. However, rheumatoid arthritis also tends to affect the entire body, causing achy muscles, fatigue, weight loss and flu-like symptoms. Also, rheumatoid arthritis usually affects the same joint on both sides of the body such as both wrists or both knees.
Rheumatoid arthritis is an autoimmune disease in which the immune system mistakenly attacks healthy cells and tissues. Osteoarthritis is a painful joint disease caused by age-related wear and tear, injury or, in rare cases, genetic illnesses.
No single test can diagnose osteoarthritis. Most doctors use several methods to diagnose the disease and rule out other problems. These methods include:
- Taking a medical history
- Giving a physical exam
- X-raying painful areas
- Giving blood tests or examine the fluid in the joints
Continue Learning about Rheumatoid Arthritis
Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.