Can lupus be contagious?

Medically, infection is considered to be the transmission of a disease caused by some pathogenic bacteria to a second human body. Lupus erythematosus is an autoimmune disease. Generally, autoimmune diseases are not contagious, so it is not an infectious disease. When the immune function is unbalanced, the susceptibility gene of the disease is sensitive to the external environment, which will cause some autoimmune abnormalities caused by the combination of internal and external factors.