When you come down with the flu, feeling miserable is expected. Fever, fatigue, sore muscles, and congestion are all part of the typical viral cycle. But sometimes, what starts as a regular flu infection can escalate into something more serious: pneumonia. Because pneumonia can develop quickly and become dangerous if untreated, knowing how to recognize the signs early is essential. Understanding what’s normal during the flu, and what isn’t, can help you decide ...
