What is the condition characterized by inflammation of the joints, commonly affecting the hands, knees, hips, and spine?

Answer: Rheumatoid arthritis

Detail: Rheumatoid arthritis is a chronic autoimmune disorder characterized by painful inflammation of the joints, resulting in stiffness, swelling, and reduced mobility. It typically affects multiple joints symmetrically and can lead to progressive joint damage, deformity, and disability if left untreated. Rheumatoid arthritis is believed to result from an abnormal immune response that targets the body’s own tissues, particularly the synovium (joint lining), causing chronic inflammation and joint erosion.