“Young” and “arthritis” aren’t two words you’d expect together. But rheumatoid arthritis (RA) is a young person’s condition, usually showing up between the ages of 30 and 50. Unlike osteoarthritis, which afflicts mostly seniors and is caused by a lifetime of wear and tear, rheumatoid arthritis is an autoimmune disease that causes a person’s immune system to attack the joints by mistake. This relentless assault causes the lining of the joints (called the synovium) to become inflamed, which limits movement and causes pain and swelling. There is no cure, but over-the-counter and prescription meds can help curb the inflammation and ease the pain.