What is the most common type of arthritis?

• A. Rheumatoid
• B. Gout
• C. Psoriatic
• D. Osteoarthritis

Answer: (D)

The main concept here is identifying which type of arthritis is most prevalent in the population. Osteoarthritis is the most common form, a degenerative joint disease that results from wear and tear over time. It often affects weight‑bearing joints like the knees, hips, and spine, and can involve the hands as well. Because aging and cumulative joint use are widespread, OA affects millions of people, making it more common than the other types. Rheumatoid arthritis is autoimmune and inflammatory, and while serious, it affects fewer people. Gout results from uric acid crystal buildup and tends to cause acute attacks in a single joint, and psoriatic arthritis occurs in people with psoriasis and has a distinct clinical pattern. So, the most common type of arthritis is osteoarthritis.