Question

After having cereal and nut mix for breakfast, your friend realizes that the mix contains a nut to which she is allergic. Soon afterward, symptoms of an allergic reaction start to appear, and she is going to take an antihistamine pill to alleviate them. What happens during the allergic reaction in her body?

Answer 1

During an allergic reaction, the immune system reacts to a foreign protein by producing IgE molecules, which trigger the release of histamines.

Step-by-step explanation:

An allergic reaction occurs when the immune system reacts to a foreign protein, such as a nut, by producing IgE molecules. These IgE molecules become associated with mast cells, which release histamines when exposed to the protein.

Histamines trigger the inflammatory response, causing symptoms of an allergic reaction. Antihistamines help alleviate these symptoms by reducing or eliminating the effects of histamines.