Final answer:
A rheumatologist is the medical professional who treats conditions like arthritis, which involves inflammation of the joints.
Step-by-step explanation:
The professional who treats disorders and diseases characterized by inflammation of the joints, such as arthritis, is known as a rheumatologist. Rheumatologists are medical doctors with specialized expertise in diagnosing and managing conditions that affect the joints, muscles, and bones. They are adept at handling inflammatory conditions like arthritis, musculoskeletal disorders, osteoporosis, and autoimmune diseases including ankylosing spondylitis and rheumatoid arthritis.
A rheumatologist specializes in the diagnosis and treatment of disorders and diseases that involve inflammation of the joints, such as various forms of arthritis.