What is the most common side effect of iodinated contrast media?

The most common side effect of iodinated contrast media is often considered to be allergic reactions. Iodinated contrast agents are widely used in imaging procedures to enhance the visibility of internal structures; however, they can provoke various reactions in some patients. These reactions range from mild to severe and can include symptoms such as itching, rash, or more serious anaphylactic responses.

While headaches, nausea, and fatigue are also documented side effects, they are generally less frequent compared to allergic reactions. Mild allergic responses, such as urticaria or pruritus, can occur in a significant number of patients, particularly those with a history of allergies or asthma. Therefore, understanding the prevalence of these reactions is critical for healthcare providers in order to anticipate potential issues and manage them effectively during imaging procedures.