2.What is the main difference between hypersensitivity and autoimmunity?

Answer 1

The main difference between hypersensitivity and autoimmunity is the target of the immune response.

In hypersensitivity, the immune system overreacts to harmless substances such as pollen, food, or medications, leading to allergic reactions. These reactions are triggered by the presence of allergens and are not directed towards the body's own tissues.

In autoimmunity, the immune system mistakenly attacks the body's own healthy cells and tissues. This can result in chronic inflammation and damage to organs and tissues. Autoimmune diseases include conditions such as rheumatoid arthritis, lupus, and type 1 diabetes.