Autoimmune diseases occur when the body's immune system mistakenly attacks its own tissues, leading to inflammation and damage. These conditions can affect various organs and systems in the body, causing a range of symptoms and complications. Some common autoimmune diseases include rheumatoid arthritis, lupus, multiple sclerosis, and type 1 diabetes. Treatment for autoimmune diseases typically involves managing symptoms and suppressing the immune response to prevent further damage. Research into the causes and potential cures for autoimmune diseases is ongoing, as these conditions can have a significant impact on quality of life.