HPI: Kelvin is a 5-year-old Asian American boy with an intermittent 2-day history of nasal congestion and cough in the early morning. The mother reports thick, green nasal discharge. He is afebrile, and appetite and sleep are normal.

PE: A smiling male patient sitting on mom’s lap.
HEENT: Tympanic membranes pearly grey without fluid in a neutral position, no cervical adenopathy, nasal turbinates are red, and clear rhinorrhea and postnasal drip.
CV: RRR, no murmurs or gallop
PULM: clear to auscultation