Immune disorders occur when the body's immune system does not function properly. This can lead to two main types of issues: autoimmune diseases, where the immune system mistakenly attacks healthy cells, and immunodeficiency disorders, where the immune system is weakened and cannot effectively fight off infections. Common examples of autoimmune diseases include rheumatoid arthritis and lupus, while HIV/AIDS is a well-known immunodeficiency disorder. These conditions can cause a range of symptoms and may require ongoing medical treatment to manage their effects on the body.