PLE-3174

A 9-year-old male was brought by his parents due to intermittent episodes of dry cough followed by rapid inspiration. He stated that his seatmate had similar symptoms of cough 2 weeks ago. Physical examination showed subconjunctival hemorrhage on both eyes, erythematous nasal turbinates, hyperemic posterior pharyngeal wall without tonsillar exudates, and clear breath sounds on both lung fields. Which of the following statements is true about his condition?