Rheumatoid Arthritis Types: Seropositive and Seronegative RA
Rheumatoid arthritis (RA) is the most common kind of arthritis, an autoimmune disease that causes inflammation in the joints and bones. More than 1.3 million adults in the United States are affected by RA, approximately 75 percent of which are women. The condition can cause inflammation and joint pain in many different parts of the ...click here to read more