A nurse is caring for a client who has a prescription for amoxicillin. Which of the following findings should indicate to the nurse the client is experiencing an allergic reaction to the medication?

A. Cardiac dysrhythmia: Cardiac dysrhythmias are not typical manifestations of an allergic reaction to amoxicillin. They may result from other cardiac conditions or electrolyte imbalances rather than an immune response to the medication. B. Laryngeal edema: Laryngeal edema is a serious sign of an allergic reaction, potentially progressing to airway obstruction and anaphylaxis. Prompt recognition and intervention are critical to prevent respiratory compromise. C. Diarrhea: Diarrhea is a common gastrointestinal side effect of antibiotics like amoxicillin due to disruption of normal gut flora, but it is not indicative of an allergic reaction. D. Nausea: Nausea is another frequent side effect associated with amoxicillin use, reflecting gastrointestinal irritation rather than an immunologic allergic response.