The correct spelling is "overreaction" (to react excessively).
Overreaction
That is called an allergy.
An overreaction over something that is very insignificant.
True
True
True
Saying or doing something that person really doesn't approve of or going outside their boundaries.
An allergy. C for plato users
An overreaction of the immune system to an otherwise harmless substance is called an allergic reaction. In allergies, the immune system mistakenly identifies the harmless substance as a threat and produces an exaggerated response, leading to symptoms such as sneezing, itching, or hives.
It doesn't indicate a stronger system in general, just an overreaction to a specific thing.
You can use histamine antagonists and/or immunosuppressants, since anaphylactic shock is just an overreaction of the immune system.