What is seronegative rheumatoid arthritis?
My guess is that you read the term for seronagative Rheumatoid arthritis. Rheumatoid arthritis is a immune disorder that usually exhibits itself in several joints of the body at the same time, (often the same joints on opposite sides of the body). When it is suspected that Rheumatoid arthritis is the culprit one of the blood tests that is done is one for Rheumatoid factor (RF) most of the people that have RA also have a high RF, However in about 20% of cases there is no RF and this is Known as seronegative Rheumatoid arthritis.