Arthritis is a broad term for conditions that affect joints. It can cause pain, stiffness, swelling, warmth, redness, or reduced movement.
Common types
Osteoarthritis is related to joint wear and tissue changes. Rheumatoid arthritis is an autoimmune disease. Gout is caused by urate crystal buildup. These are different conditions, not just one disease.
Why diagnosis matters
Treatment and long-term outlook depend on the type of arthritis. Joint pain from injury, infection, autoimmune disease, or crystal disease can need different care.
Severe joint swelling, fever, inability to move a joint, or sudden intense pain should be evaluated promptly.