"Arthritis" literally means joint inflammation. Joints are places where two bones meet, such as your elbow or knee. There are many different types of arthritis with different causes and …

Overview of Rheumatoid Arthritis Rheumatoid arthritis (RA) is a chronic (long-lasting) autoimmune disease that mostly affects joints. RA occurs when the immune system, which normally helps …

The most common type of long-lasting arthritis that affects children is juvenile idiopathic arthritis. Symptoms include joint pain, swelling, warmth, & stiffness.

Psoriatic arthritis can occur in those who have psoriasis, often causing joint pain & swelling. Learn about the symptoms & risk factors for psoriatic arthritis.

Osteoarthritis is the most common form of arthritis. Tissues in the joint break down over time. Learn the symptoms & causes & if you might be at risk.

Ankylosing spondylitis is a type of arthritis that affects the spine. Learn about symptoms, risk factors, & possible causes.

Reactive arthritis is a form of spondyloarthritis, a group of arthritis conditions that typically involve the sacroiliac joints in the lower back, and entheses (places where tendons or ligaments attach …

Gout is a kind of arthritis that causes painful & stiff joints, commonly in the big toe. Learn the symptoms of gout attacks & what puts you at risk.

Jun 5, 2025 · Find information about more than 20 different arthritic diseases (those that affect the joints) and rheumatic diseases (which usually affect joints, tendons, ligaments, bones, and …

May 23, 2023 · The main symptoms of arthritis are joint pain and stiffness. Our experts diagnose, treat and manage your arthritis symptoms.