Ra or re (re coptic , r) is the ancient egyptian deity of the sun. By the fifth dynasty in the 25th and 24th centuries bc, he had become one of the most important gods in ancient egyptian religion, identified primarily with the noon sun. Ra was believed to rule in all parts of the created world the sky, the earth, and the underworld.
This means your immune system (which usually fights infection) attacks the cells that line your joints by mistake, making the joints swollen, stiff and painful. Over time, this can damage the joints, cartilage and nearby bone.
what is rheumatoid arthritis (ra)? Rheumatoid arthritis, or ra, is an autoimmune and inflammatory disease, which means that your immune system attacks healthy cells in your body by mistake, causing inflammation (painful swelling) in the affected parts of the body.
RA What does RA stand for? The Free Dictionary
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Rheumatoid arthritis (ra) and osteoarthritis (oa) the word arthritis simply means inflammation of the joint.