A nurse is collecting data from a child who has pertussis. Which of the following manifestations should the nurse expect?

A. Facial erythema: During the paroxysmal stage of pertussis, severe coughing fits can lead to increased intrathoracic pressure, causing facial redness or erythema, and sometimes petechiae around the eyes. This is a classic manifestation of pertussis in children. B. Productive cough with thick mucous: Pertussis typically presents with a dry, nonproductive cough rather than a productive cough. Mucus production is minimal, especially during the paroxysmal stage. C. Koplik spots: Koplik spots are small white lesions on the buccal mucosa that appear in measles, not pertussis. They are a diagnostic feature of measles during the prodromal phase. D. Beefy, red tongue: A beefy red tongue, often called “strawberry tongue,” is characteristic of scarlet fever or Kawasaki disease, not pertussis. It is unrelated to the clinical presentation of whooping cough.