What is allergic reaction resulting in severe bronchospasm drop blood dyspnea would be called?

An allergic reaction resulting in severe bronchospasm, drop in blood pressure, and dyspnea would be called anaphylaxis. Anaphylaxis is a severe, life-threatening allergic reaction that can occur within minutes of exposure to an allergen. Symptoms of anaphylaxis can include difficulty breathing, wheezing, coughing, nausea, vomiting, diarrhea, a drop in blood pressure, and loss of consciousness. Anaphylaxis is a medical emergency that requires immediate treatment with epinephrine (adrenaline).