Because there are more than 100 types of arthritis, it is likely that you or someone you know may have the disease. There are two main forms. Osteoarthritis is a gradual wearing away of the cartilage, which is the protective covering on the ends of bones. Rheumatoid arthritis affects the joints and soft surrounding tissues. It results from the wearing down of cartilage and occurs mainly in older adults, particularly those aged 60 and over.
Symptoms usually begin slowly, with a mild aching and soreness.
Though any joint can be affected, pain is more commonly felt in the fingers, knees, hips and spine. Rheumatoid arthritis usually occurs in people 20 to 40 years old, but can attack any age group. In the early stages, you may feel tired, achy, and sore, and your joints may feel stiff. You also may lose weight and run a fever. In severe cases, fingers may become deformed, making movement difficult.