A Young Adult with Worsening Cough: Using Lung POCUS to Diagnose Early Pneumonia

A 24-year-old man presents to a primary care clinic with seven days of respiratory symptoms. He initially developed cough, fever, sore throat, and fatigue. His symptoms improved on days 4 and 5, but then worsened in the past 48 hours with recurrent fever and productive green sputum.