Question

What is allergic reaction ? Best answer will be mark as brainliest.....

Answer 1

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Most types of eczema are not allergies. But the disease can flare up when you're around things that cause an allergic reaction. Your body's immune system overreacts to substances, called allergens, that are usually not harmful. You might get hives, itching, swelling, sneezing, and a runny nose.

Answer 2

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here is your answer

A condition in which the immune system reacts abnormally to a foreign substance is known as allergic reaction

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