Arthritis is inflammation (or swelling) found in one or more joints. It describes more than 100 conditions that the joints, tissues around the joint, or connective tissues. Note that while there are many types of arthritis, but two remain the most common:
Osteoarthritis is the most common form of arthritis. It is commonly referred to as a degenerative joint disease, describing “wear and tear” on the joints. It occurs most frequently in the knees, hips, and hands. In cases of osteoarthritis, the joints begin to break down, changing the underlying bone. While these usually develop slowly, they can also present in acute cases.
Rheumatoid Arthritis is both an autoimmune and inflammatory disease, which means that your mistakenly immune system attacks healthy cells in your body. Rheumatoid Arthritis primarily attacks several joints at one time. In joints affected with Rheumatoid Arthritis, the lining of the joint becomes inflamed, which can cause lasting damage and deformity to the joint.