A list of all autoimmune diseases is provided by the American Autoimmune Related Diseases Association at aarda.org. Approximately one in five Americans suffer from autoimmune diseases; some studies indicate that as many as 75 percent of those affected are women.
Autoimmune diseases are typically classified as organ-specific, where the autoimmune process is directed mostly against one organ, or non-organ-specific, where activity is spread throughout the body. Organ-specific disorders and the organ affected include Addison’s disease (adrenal glands), Hashimoto’s thyroiditis (thyroid gland), pernicious anemia (stomach) and type 1 diabetes (pancreas). Non-organ-specific disorders include rheumatoid arthritis, systemic lupus erythematosus (SLE) and dermatomyositis, according to the American Autoimmune Related Diseases Association.