What is Rheumatoid Arthritis? Put simply, rheumatoid arthritis (RA) is a condition which causes pain and stiffness in the joints. This pain can cause immobility and loss of the use of any affected joints – from the hands and feet, to knees, shoulders, or any other place in the body where a joint exists. In time, RA can also lead to bone destruction and other serious health … [Read more...]