What is arthritis? And How is it Diagnosed? Arthritis is a common medical condition characterized by inflammation of one or more joints, resulting in pain, stiffness, swelling, and reduced mobility. There are many different types of arthritis, with osteoarthritis and rheumatoid arthritis being the most prevalent forms. Osteoarthritis occurs when the protective cartilage that cushions the ends of bones wears down over time, leading to pain and stiffness in the affected joints, often occurring in the knees, hips, hands, and spine. Rheumatoid arthritis, on the other hand, is an autoimmune disorder where the body's immune system mistakenly attacks the lining...