Autoantigen

**Autoantigens** are substances that cause an immune response against themselves in the body. These antigens can be bacterial, viral, plant or animal.

Autoantigens are present in every person and are part of the immune system. They can be produced as a response to an infection entering the body, or without it, in response to external irritations. An autoantigen can be a foreign body that enters the human body. This could be metal shavings, bacteria, foreign metal, or organic matter such as protein. In turn, such an antigen can cause the development of allergies, and in more severe cases, cause an infection that destroys the body's cells.

But you need to know that not all autoantigens are dangerous. For example, the skin may contain molecules that cause reactions in allergy sufferers. But they do not affect human health in any way, because his immunity is not