Which of the following is a common cause of anaphylactic shock?

Anaphylactic shock is a severe and potentially life-threatening allergic reaction that occurs rapidly after exposure to an allergen. One of the most common causes of anaphylaxis is a medication allergy. Certain medications, such as antibiotics (for example, penicillin), nonsteroidal anti-inflammatory drugs (NSAIDs), and muscle relaxants, can trigger this severe immune response in susceptible individuals. The body's histamine and other chemicals are released in response to the allergen, leading to symptoms such as difficulty breathing, swelling, hives, and a drop in blood pressure, which can contribute to shock.

High blood pressure, environmental noise, and physical exertion do not typically trigger anaphylactic reactions. While high blood pressure can occur in various medical situations, it is not a cause of anaphylaxis. Environmental noise is unrelated to allergic reactions. Physical exertion, while it may exacerbate symptoms in some individuals with existing allergies, does not cause anaphylactic shock on its own. Understanding medication allergies as a primary cause helps paramedics and healthcare professionals recognize and respond effectively to episodes of anaphylaxis.