What is anaphylactic shock?

Anaphylactic shock is categorized as an overwhelming allergy reaction that occurs in response to exposure to an allergen. This severe and rapid hypersensitivity reaction can involve multiple body systems and often manifests within minutes of exposure. Common triggers for anaphylaxis include foods such as peanuts or tree nuts, insect stings, certain medications, and latex.

During anaphylaxis, the immune system releases a large amount of histamine and other chemicals, leading to symptoms such as difficulty breathing due to swelling of the airways, a rapid drop in blood pressure, and hives. This reaction can escalate quickly and require immediate medical intervention, typically with an injection of epinephrine, to counteract its effects.

Given this definition, other choices do not accurately describe anaphylactic shock, as they relate to other medical conditions or reactions that do not involve the acute and severe nature of an allergic response.