Allergy

Real World Example

Imagine spilling a tiny drop of coffee on your shirt and then throwing the entire shirt into the washing machine, using an excessive amount of detergent and water, just for that small stain. This is similar to how an allergy works, where the immune system overreacts to a harmless substance, like pollen or pet dander, as if it were a major threat. The spilled coffee represents the allergen, the excessive washing is the immune system's overreaction, and the shirt is your body experiencing unnecessary stress from the overreaction.