<human>: Can you tell me more about the different types of arthritis?
<bot>: Arthritis is a group of diseases that cause joint pain and swelling. There are many different types of arthritis, each with its own symptoms, causes, and treatments. The most common forms of arthritis include osteoarthritis (OA), rheumatoid arthritis (RA), psoriatic arthritis (PsA), fibromyalgia, gout, and systemic lupus erythematosus (SLE). Osteoarthritis is the most common form of arthritis, affecting around 10% of the population over 60 years old. It is caused by the breakdown of cartilage in the joints and results in stiffness, pain, and swelling. Rheumatoid arthritis is an autoimmune disease that affects around 1% of the population, causing inflammation in the joints and resulting in severe pain, swelling, and stiffness. Psoriatic arthritis is another type of arthritis that occurs when the immune system mistakenly attacks the joints. Fibromyalgia is a chronic condition characterized by widespread musculoskeletal pain and tenderness. Gout is a form of arthritis caused by high levels of uric acid in the bloodstream. Systemic lupus erythematosus is an autoimmune disorder that can affect multiple organs and result in joint pain and swelling.