Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In a systemic autoimmune disease the immune system attacks many different organs, tissues, and cells of the body. Examples of systemic autoimmune diseases include: * Systemic lupus erythematosus (or SLE, or lupus), * Rheumatoid arthritis (RA), * Scleroderma, and systemic sclerosis (or systemic scleroderma), * Dermatomyositis (DM), and Sjögren's syndrome.