What is allergy? (Topic:Health and Disease)
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Allergies are avery common overreaction of immuno system to usually harmless substance.
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the term allergy means 'other work' in Greek.
allergies occurs when the immune system of the body gets activated due to the presence of certain substance towards which the body is hypersensitive. These substances are otherwise harmless to most of people or population.
Types of allergy =
1.Food allergy
2.Seasonal allergy
3.Dust allergy
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