What is the condition called when your body's immune system overreacts to an otherwise harmless foreign particle?

Name: What is the condition called when your body's immune system overreacts to an otherwise harmless foreign particle?
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Quizplus · Accepted Answer

This condition is called an allergy, where the immune system overreacts to an otherwise harmless foreign particle, such as pollen or food. This can cause a variety of symptoms ranging from mild (itchy eyes, sneezing) to severe (anaphylactic shock).

What Is the Condition Called When Your Body's Immune System