anaphylaxis
/ˌænəfɪˈlæksɪs/
noun
- A severe, life-threatening allergic reaction that affects the whole body, often causing difficulty breathing, swelling, and a drop in blood pressure.
- She carries an epinephrine injector in case she goes into anaphylaxis from a bee sting.
- The paramedics treated the patient for anaphylaxis after he ate a food he was allergic to.
- Anaphylaxis can occur within minutes of exposure to an allergen like peanuts or shellfish.