There are different types of arthritis, each with different causes.

The 2 most common are Osteoarthritis and Rheumatoid Arthritis.

Osteoarthritis is related to wear and tear of cartilage, and often associated with trauma and other joint injuries.

Rheumatoid arthritis is associated with an over active immune system which results in joint inflammation.

Gout, another relatively common type of arthritis, is associated with abnormal metabolism. This causes increased levels of uric acid in the body and uric acid deposits in the joints, resulting in inflammation and pain.

There are also less common causes of arthritis associated with infection, psoriasis, and other diseases which can also affect patients.