What causes RA factor to be high?

Related questions

1. Is Ra always inherited?
2. Which is worse osteo or rheumatoid arthritis?
3. What does rheumatoid arthritis feel like in hands?
4. Where does RA start?
5. How does RA affect the eyes?
6. Which joint is not involved in rheumatoid arthritis?
7. Can Rheumatoid Arthritis be caused by stress?
8. Is walking good for arthritis in the feet?
9. Is walking good for bone on bone knees?
10. Why is rheumatoid arthritis symmetrical?

Tags

1. #tuberculosis
2. #mononucleosis
3. #other
4. #infectious
5. #values
6. #systemic
7. #scleroderma
8. #rheumatoid
9. #syphilis
10. #autoimmune
11. #vasculitis
12. #erythematosus
13. #malaria
14. #lupus
15. #syndrome
16. #arthritis
17. #caused
18. #levels
19. #diseases