Rheumatoid arthritis is a chronic systemic disease that primarily affects the joints. Presentation is typically as an insidious polyarthritis characterised by inflammatory changes in the synovial membranes and articular structures leading to deformity and ankylosis. Systemic features usually develop as the disease progresses.
RA affects between 0.5% and 1% of the population.Women are affected three times more often than men. The peak incidence is between the ages of 25 and 55 years.
* approximately 400,000 people in England and Wales have this condition
The cause is unknown, but an autoimmune mechanism involving viral infection has been postulated.
From GPnotebook.com
I removed some of the depressing comments!
DrP