What must be done if a patient shows signs of an allergic reaction during treatment?

When a patient shows signs of an allergic reaction during treatment, it is crucial to notify the physician immediately. This step is essential because allergic reactions can vary in severity, ranging from mild symptoms to life-threatening conditions such as anaphylaxis. Prompt communication with the physician ensures that the patient receives the appropriate medical intervention swiftly.

While some individuals might think to document the incident or to continue treatment, these actions may delay necessary care and potentially worsen the patient's condition. Similarly, administering antihistamines without medical guidance could be inappropriate, especially if the reaction is severe or if the patient has specific contraindications. Therefore, notifying the physician is the best course of action to ensure patient safety and effective management of the allergic reaction.