How is an allergic response different from a normal inflammation response?

Allergic response:

* Involves the activation of the immune system in response to an allergen, a foreign substance that the body perceives as harmful.

* IgE antibodies bind to the allergen, triggering the release of histamine and other inflammatory mediators from mast cells and basophils.

* Symptoms can range from mild, such as a runny nose or itchy eyes, to severe, such as anaphylaxis, which can be life-threatening.

Normal inflammation response:

* A protective response to injury or infection.

* Involves the release of cytokines and other inflammatory mediators to promote healing and protect the body from further damage.

* Symptoms are usually mild and resolve on their own, such as redness, swelling, and pain.

Key differences:

* Allergic responses are caused by allergens, while normal inflammation responses are caused by injury or infection.

* Allergic responses involve the activation of the immune system, while normal inflammation responses do not.

* Allergic responses can be severe and even life-threatening, while normal inflammation responses are usually mild and resolve on their own.