Which condition involves inflammation of joints causing stiffness and decreased mobility?

• A. Gout
• B. Osteoporosis
• C. Rheumatism
• D. Arthritis

Answer: (D)

Joint inflammation with stiffness and reduced movement points to arthritis. Arthritis is the broad term for conditions that inflame the joints, causing swelling, warmth, pain, and morning stiffness that limits how well the joints move. Gout is a specific inflammatory arthritis caused by urate crystals, so it fits the idea of joint inflammation but describes a particular type rather than the general condition. Osteoporosis involves weakening of bones, not joint inflammation, so it doesn’t explain stiffness or limited mobility from inflamed joints. Rheumatism is an older, non-specific label for musculoskeletal pain and doesn’t pinpoint the joint inflammation mechanism. Therefore, arthritis best captures the described symptoms.