Answer:
The term that describes a severe, whole-body allergic reaction is "anaphylactic reaction."
Step-by-step explanation:
An anaphylactic reaction is a severe, whole-body allergic reaction that occurs when an individual is exposed to a specific allergen, such as certain foods, medications, insect stings, or latex. The reaction can occur within seconds or minutes of exposure and can lead to serious and potentially life-threatening symptoms, including difficulty breathing, rapid heartbeat, swelling of the face and throat, hives, low blood pressure, and gastrointestinal problems.
Anaphylactic reactions are typically treated with epinephrine (adrenaline) injections, which help to constrict blood vessels, increase blood pressure, and relax airways, allowing the individual to breathe more easily. It is important to seek emergency medical attention immediately if an anaphylactic reaction is suspected, as prompt treatment is essential for a positive outcome.