Which of the following is a common sign of anaphylaxis?

Swelling and difficulty breathing are hallmark signs of anaphylaxis, which is a severe and potentially life-threatening allergic reaction. Anaphylaxis occurs when the body reacts to an allergen—such as certain foods, bee stings, or medications—by releasing a surge of chemicals that can cause widespread inflammation. This inflammation may lead to the swelling of the throat and tongue and constriction of the airways, leading to significant difficulty in breathing.

The presence of hives, swelling, and changes in breath sounds are key indicators of this reaction, and immediate medical intervention is critical. Recognizing these symptoms can be life-saving, as timely administration of epinephrine is essential to counteracting the reaction and restoring normal breathing. Understanding this is crucial for health professionals as they assess and manage patients experiencing anaphylaxis.