To summarize: autoimmunity, defined as the presence of self-reactive B cells (autoantibodies) and/or T cells, is very common but does not necessarily mean "autoimmune disease."

In immunology, autoimmunity is the system of immune responses of an organism against its own healthy cells, tissues and other normal body constituents. [1][2] Any disease resulting from this type of …

How does autoimmunity happen in the body? What is an autoimmune disease? autoimmunity, the state in which the immune system reacts against the body’s own normal components, producing disease …

Oct 21, 2025 · Autoimmune diseases result when your immune system is overactive, causing it to attack and damage your body's own tissues. Normally, your immune system creates proteins called …

Oct 22, 2024 · If you have an autoimmune disease, your immune system is more active than it should be. Because there aren’t invaders to attack, your immune system turns on your body and damages …

In some people and animals, for various reasons, the antibodies become overactive and turn on the body's healthy tissues as well; the result is an autoimmune disease—an immune response directed …

Autoimmune diseases occur when there is some interruption of the usual control process, allowing lymphocytes to avoid suppression, or when there is an alteration in some body tissue so that it is no …

Nov 18, 2024 · However, if you have an autoimmune disease, your immune system mistakes parts of your body, such as your joints or skin, as foreign. It releases proteins called autoantibodies that …

Autoimmune disease occurs when an immune response attacks our own tissues. Like all adaptive immune responses, it is focused on specific antigens by T-cell receptors and B-cell receptors.

A condition in which the body’s immune system mistakes its own healthy tissues as foreign and attacks them. Most autoimmune diseases cause inflammation that can affect many parts of the body. The …