What life-threatening condition involves a severe allergic reaction?

Anaphylaxis is a severe and potentially life-threatening allergic reaction that can occur rapidly after exposure to an allergen. This condition is characterized by symptoms such as difficulty breathing, swelling of the throat and tongue, a rapid drop in blood pressure, and symptoms of shock. Anaphylaxis requires immediate medical intervention, often with the administration of epinephrine, to reverse the reaction and prevent serious complications, including death. Recognizing the signs of anaphylaxis promptly is crucial in providing the necessary care to someone experiencing this severe allergic reaction.

Hypotension refers to low blood pressure, which can be a symptom of various medical conditions but is not specifically an allergic reaction. Hyperglycemia denotes high blood sugar levels, typically related to diabetes, and is not associated with allergic reactions. Urticaria, or hives, may occur as part of an allergic reaction but is generally not life-threatening and does not encompass the full severity of anaphylaxis.