What is a common side effect associated with the use of iodinated contrast agents in imaging?

Iodinated contrast agents are commonly used in various imaging procedures, such as CT scans, to enhance the visibility of internal structures. One of the significant concerns with the use of these agents is the potential for allergic reactions. These reactions can range from mild symptoms, such as hives or itching, to more severe responses like anaphylaxis, which can cause difficulty breathing and require immediate medical attention.

This risk arises because iodinated contrast agents can trigger an immune response in some individuals, particularly those with a history of allergies or prior reactions to contrast media. Therefore, it's important for healthcare providers to screen patients for any history of allergies before administering these agents. Understanding this side effect is critical for medical professionals to ensure patient safety during imaging procedures that involve these contrast agents.

Other symptoms associated with iodinated contrast agents, such as nausea and vomiting, headaches, and dizziness, can occur as well, but they are generally less severe and not classified as true allergic reactions. These side effects can occur due to the stress of the procedure, anxiety, or other factors, but they do not involve the immune response that characterizes allergic reactions.