Arthritis is the swelling and tenderness of one or more joints. The main symptoms of arthritis are joint pain and stiffness, which typically worsen with age. The most common types of arthritis are osteoarthritis and rheumatoid arthritis.

Inflammation of one or more joints, causing pain and stiffness that can worsen with age.
Different types of arthritis exist, each with different causes including wear and tear, infections and underlying diseases.
Symptoms include pain, swelling, reduced range of motion and stiffness.
Medication, physiotherapy or sometimes surgery helps reduce symptoms and improve quality of life.
Requires a medical diagnosis
Symptoms include pain, swelling, reduced range of motion and stiffness.
People may experience:
Pain areas: in the joints, ankle, back, fingers, hands, muscles, neck, or wrist
Pain types: can be intermittent or sharp
Pain circumstances: can occur while sitting
Joints: stiffness, tenderness, or swelling
Muscular: decreased range of motion, difficulty walking, or muscle weakness
Hand: bump on the finger or bony outgrowth in fingers or toes
Whole body: fatigue or malaise
Also common: flare, physical deformity, redness, or stiff neck