Autoimmune Disease - Using Herbs to Relieve Symptoms and Help With Healing
This problem is more a condition than a disease [affects the immune system] and it is when the antibodies [a bodies natural defense against infections] in the blood actually start attacking their own host. They may focus on just one organ in the attack or hone in on a particular tissue that is present in a multiple set of organs [the basement membrane of the lungs and kidneys are fine examples]. Ref. Source 3
Immune system -- Knocked off balance. Instead of protecting us, the immune system can sometimes go awry, as in the case of autoimmune diseases and allergies. A team has now dissected how mast cells regulate their calcium levels to keep the immune response under control. Source 7t.