Autoimmune disease is a complex health problem wherein the immune system loses the ability to differentiate between itself and foreign invaders. Literally, your body mistakenly attacks itself inflicting (sometime irreversible) damage and igniting systemic inflammation.
What is autoimmune disease ? Tissues of the Body Affected by Autoimmune Attack "Many triggers can cause autoimmune disease and many body tissues can be affected." "Missing from list: cardiac autonomic neuropathy."