Allergic reactions occur when the same process that helps protect against infection is directed toward a noninfectious agent.

Question

Quizplus · Accepted Answer

Allergic reactions occur when the immune system mistakenly identifies a harmless substance as a threat and mounts an immune response, leading to symptoms such as itching, hives, and swelling. This is the same process that helps protect against infectious agents, but in the case of allergies, it is directed toward a noninfectious agent.

Allergic Reactions Occur When the Same Process That Helps Protect