A nurse in a clinic is assisting with the care of a 3-year-old toddler. Exhibits The nurse is reviewing the collected data. For each finding, click to specify if the finding is consistent with acute laryngotracheobronchitis or pneumonia. Each finding may support more than 1 disease process.

Rationale: Stridor: Stridor is a hallmark of upper airway obstruction, commonly seen in croup (acute laryngotracheobronchitis), due to swelling of the larynx and trachea. It is not a typical feature of pneumonia, which affects the lower respiratory tract. Type of cough: A barking or seal-like cough is characteristic of croup. Pneumonia usually presents with a wet, productive cough, not the dry, harsh type associated with upper airway inflammation. Fever: Fever can occur in both croup and pneumonia as a systemic response to infection. The presence of fever alone does not distinguish between the two. Irritability: Irritability is a nonspecific but common finding in both illnesses. It can result from discomfort, fever, difficulty breathing, or systemic illness.