MSH: Disorders that are characterized by the production of antibodies that react with host tissues or immune effector cells that are autoreactive to endogenous peptides.,CSP: heading term for a diverse group of disorders characterized by pathologenic immune reactions to autologous (self) tissue; for nonnpatholgical, developmental, or phenomenological aspects of autoimmunity, use AUTOIMMUNITY.,NCI: A condition in which the body recognizes its own tissues as foreign and directs an immune response against them.,MEDLINEPLUS: <p>Your body's immune system protects you from disease and infection. But if you have an autoimmune disease, your immune system attacks healthy cells in your body by mistake. Autoimmune diseases can affect many parts of the body. These diseases tend to run in families. Women - particularly African-American, Hispanic-American, and Native-American women - have a higher risk for some autoimmune diseases. </p><p>There are more than 80 types of autoimmune diseases, and some have similar symptoms.