Give scientific reasons: Autoimmune diseases are different from immune deficiency diseases.

(N/A) Autoimmune diseases occur when the body's immune system loses the ability to distinguish between self and non-self cells,leading it to attack the body's own healthy tissues. An example is rheumatoid arthritis.
In contrast,immune deficiency diseases occur when the body's immune system is weakened or compromised,resulting in an inability to fight off pathogens effectively,which leads to recurrent infections and poor healing. An example is $AIDS$.