![Who does arthritis affect?](/sites/default/files/styles/default/public/image/CDC-Arthritis.webp?itok=k2ThO2-C)
Arthritis is a catch-all term for conditions that affect the joints, tissues around the joint, and other connective tissues. There are more than 100 types of arthritis, the most common form being osteoarthritis or “wear and tear” arthritis. It occurs most frequently in the hands, hips, and knees. Other common forms of arthritis are rheumatoid arthritis, lupus, fibromyalgia, and gout. Symptoms of arthritis are pain, aching, stiffness and swelling in or around the joints.