In patients with severe allergies, why is it essential to avoid certain dental anesthetics?

• A. They may cause dizziness
• B. They can induce swelling
• C. They might trigger anaphylaxis
• D. They generally contain high levels of epinephrine

Answer: (C)

In patients with severe allergies, it is crucial to avoid certain dental anesthetics because they might trigger anaphylaxis. Anaphylaxis is a severe, potentially life-threatening allergic reaction that can occur rapidly after exposure to an allergen. Certain components in dental anesthetics, such as preservatives or other additives, can be the source of these allergens.

When a patient with a history of severe allergies receives an anesthetic containing these allergens, their immune system may react aggressively, leading to symptoms such as difficulty breathing, swelling of the throat, a rapid drop in blood pressure, and other systemic effects that require immediate medical intervention. Awareness and careful selection of anesthetics are necessary in these cases to prioritize patient safety and prevent the occurrence of such serious reactions. This understanding highlights the importance of taking a thorough medical history to identify any potential allergic reactions prior to performing procedures that require anesthesia.