Which of the following is the best definition of autoimmune disease?

A. a condition in which B cells and T cells respond independently to antigens and do not interact correctly

B. a condition in which the adaptive immune system fails to recognize the second infection by the same antigen

C. a condition in which the immune system creates random antibodies without being triggered by an antigen

D. a condition in which self molecules are treated as non-self

A condition in which self molecules are treated as non-self is the best definition of autoimmune disease.

Option: D

Explanation:

An autoimmune illness is a disorder wherein the immune system to attack the body inappropriately. The immune system usually watches off germs such as bacteria and viruses. If it detects these foreign invaders, an army of fighter cells is sent out to strike them.

The very general autoimmune diseases are like Systemic lupus erythematosus (lupus), Rheumatoid arthritis, IBD, multiple sclerosis (MS), type 1 diabetes mellitus, etc. Autoimmune disorders do not trigger sepsis, but there is a greater chance of developing complications in individuals with other forms of autoimmune disorders, which can activate sepsis.