A joint is where two or more bones come together, like the knee, hip, elbow, or shoulder. Joints can be damaged by many types of injuries or diseases but this often includes arthritis. Depending on the type of arthritis you have, your signs and symptoms may include joint:
- Pain
- Stiffness
- Swelling
- Redness
- Decreased range of motion
Arthritis is inflammation of one or more of your 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.
Osteoarthritis causes cartilage
The hard, slippery tissue that covers the ends of bones where they form a joint — to break down. Rheumatoid arthritis is an autoimmune disorder that first targets the lining of joints (synovium).
Uric acid crystals, infections or underlying disease, such as psoriasis or lupus, can cause other types of arthritis.
Treatments vary depending on the type of arthritis.

