Chandrasekaran, MD There are two main types of rheumatoid arthritis (RA) that affect adults: seropositive and seronegative.
There is a bidirectional association between rheumatoid arthritis (RA) and chronic obstructive pulmonary disease (COPD ...
Rheumatoid arthritis (RA) and lupus are both autoimmune ... People without them have seronegative RA. Lupus refers to several different inflammatory conditions involving the skin and/or internal ...