what is arthritis
Arthritis is very common but is not well understood. Actually, âarthritisâ is not a single disease; it is an informal way of referring to joint pain or joint disease. There are more than 100 different types of arthritis and related conditions.People of all ages, sexes and races can and do have arthritis, and it is the leading cause of disability in America.steoarthritis is the most common type of arthritis. When the cartilage â the slick, cushioning surface on the ends of bones â wears away, bone rubs against bone, causing pain, swelling and stiffness. Over time, joints can lose strength and pain may become chronic.