Autoimmune diseases arise when the immune system attacks one or more of the body's normal constituents as if they were invaders. When the immune system fails to recognize self it may produce immune cells or antibodies (called autoantibodies) that target its own cells, tissues, and/or organs. Those attacks cause inflammation and tissue damage that lead to autoimmune disorders.
https://labtestsonline.org/conditions/autoimmune-diseases
An autoimmune disorder may result in: 1  The destruction of body tissue. 2  Abnormal growth of an organ. 3  Changes in organ function.
https://medlineplus.gov/ency/article/000816.htm
The immune system attacks and damages blood vessels in this group of autoimmune diseases. Vasculitis can affect any organ, so symptoms vary widely and can occur almost anywhere in the body. Treatment includes reducing immune system activity, usually with prednisone or another corticosteroid.
https://www.webmd.com/a-to-z-guides/autoimmune-diseases
In a few types of autoimmune disease (such as rheumatic fever), a virus or infection with bacteria triggers an immune response and the antibodies or immune cells called T-cells attack normal cells because some part of their structure resembles a part of the infecting microorganism.
https://labtestsonline.org/conditions/autoimmune-diseases
Immune system disorders cause abnormally low activity or over activity of the immune system. In cases of immune system over activity, the body attacks and damages its own tissues (autoimmune diseases). Immune deficiency diseases decrease the body's ability to fight invaders, causing vulnerability to infections. In response to an unknown trigger, the immune system may begin producing antibodies that instead of fighting infections, attack the body's own tissues.
https://www.webmd.com/a-to-z-guides/autoimmune-diseases
Immune System Research. The immune system is a network of cells, tissues, and organs that work together to protect the body from infection. Although scientists have learned much about the immune system, they continue to study how the body targets invading microbes, infected cells, and tumors while ignoring healthy tissues.
https://www.niaid.nih.gov/research/immune-system-research
An autoimmune disorder may affect one or more organ or tissue types. 1  Areas often affected by autoimmune disorders include: 2  Blood vessels. 3  Connective tissues. 4  Endocrine glands such as the thyroid or pancreas. 5  Joints. 6  Muscles. 7  Red blood cells. 8  Skin.
https://medlineplus.gov/ency/article/000816.htm
The immune system is a network of cells, tissues, and organs that work together to protect the body from infection. Why Is Immune System Research a Priority for NIAID? Although scientists have learned much about the immune system, they continue to study how the body targets invading microbes, infected cells, and tumors while ignoring healthy tissues.
https://www.niaid.nih.gov/research/immune-system-research
Immune Tolerance. Tolerance is the prevention of an immune response against a particular antigen. For instance, the immune system is generally tolerant of self-antigens, so it does not usually attack the body's own cells, tissues, and organs. However, when tolerance is lost, disorders like autoimmune disease or food allergy may occur. Learn about the ways immune tolerance is maintained. Disorders of the Immune System
https://www.niaid.nih.gov/research/immune-system-research
Types of treatments include: 1  Supplements to replace a substance that the body lacks, such as thyroid hormone, vitamin B12, or insulin, due to the autoimmune disease. 2  Blood transfusions if blood is affected. 3  Physical therapy to help with movement if the bones, joints, or muscles are affected.
https://medlineplus.gov/ency/article/000816.htm
what is immune
The immune system is a network of cells, tissues, and organs that work together to protect the body from infection.