Which of the following is a symptom of anaphylaxis?

Anaphylaxis is a severe, potentially life-threatening allergic reaction that occurs rapidly after exposure to an allergen. The symptoms can escalate quickly, impacting various body systems, particularly respiratory and cardiovascular.

The correct response highlights two critical symptoms of anaphylaxis: difficulty breathing and swelling of the throat. These symptoms are indicative of airway obstruction due to swelling (angioedema) and bronchoconstriction, which can lead to significant respiratory distress. This obstructive response occurs as the body's immune system reacts aggressively, releasing a barrage of chemicals such as histamine that can cause the airways to tighten and swell.

Recognizing these symptoms is vital for prompt treatment, typically with epinephrine, to reverse the reaction and restore breathing. The severity of this response emphasizes the urgent need for medical attention when these symptoms arise.