Arthritis is an umbrella term for more than 100 conditions that cause joint pain, stiffness, and swelling. The most common types of arthritis are osteoarthritis and rheumatoid arthritis.
What causes arthritis?
The cause of arthritis depends on the type. Osteoarthritis mostly occurs due to wear and tear but may also develop in response to inflammation. Rheumatoid arthritis is a type of autoimmune inflammatory arthritis. This means that it develops when something causes the immune system to mistakenly attack the body's healthy tissue. Infectious arthritis happens due to an infection, while gout — or metabolic arthritis — occurs when uric acid crystals build up in the joints.
Is arthritis a disability?
Arthritis is the leading cause of disability in the United States, according to the Arthritis Foundation. The Social Security Administration (SSA) recognizes arthritis as a disability.
Is arthritis a genetic condition?
There may be a genetic link to some types of arthritis. For example, researchers have identified the immune system gene HLA-DR4 as a risk factor for rheumatoid arthritis. However, environmental factors may be more likely to affect the development of arthritis. Learn about the risk factors for arthritis.
