Torrisi Thomas P DDS in Methuen, Massachusetts

This article clarifies the key differences between rheumatoid arthritis (RA) and osteoarthritis (OA) so patients and caregivers can recognize symptoms sooner and pursue the right care. RA is an autoimmune disease that often causes symmetrical joint pain, swelling, warmth, and prolonged morning stiffness, and may bring whole‑body symptoms like fatigue—requiring early, disease‑modifying treatment. OA is a degenerative “wear‑and‑tear” condition that typically affects weight‑bearing or heavily used joints, with pain that worsens with activity and shorter-lived stiffness, managed with targeted pain control, movement, and joint protection. Understanding how they differ in causes, symptoms, testing, and treatment helps you communicate clearly with your clinician, make informed choices, and protect joint function and quality of life.