Doctors often use certain medications to treat infections. A few people have a reaction to some of these medications, such as itching, swelling, or trouble breathing. This is an example of

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Answer: The body’s immune system overreacting to a usually harmless substance.

A reaction to some medications, such as itching, swelling, or trouble breathing is an example of hypersensitive reaction (drug allergy).

What is drug allergy?

It a an allergic reaction of the body towards a medicine.

What kind of reaction is a drug allergy?

It is a kind of hypersensitive reaction.

What is a hypersensitive reaction?

It is an exaggerated response of a body towards an immunogen.

Why is it caused?

When drugs bind to some immune cells such as T cells, they cause a release of some chemicals which causes an allergic reaction in the body.

To learn more about drug allergy and hypersensitive reaction here,

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