If a child was allergic to a substance scratched onto their skin,the area turned red and swollen within about 10 minutes.Which of the following would cause these symptoms?

Question

Quizplus · Accepted Answer

The release of histamine from mast cells is a common response in an allergic reaction, and it can cause the characteristic symptoms of redness and swelling. The other options are not directly related to an allergic reaction.

If a Child Was Allergic to a Substance Scratched onto Their