Sinus infections, or sinusitis, occur when the cavities around your nasal passages become inflamed and swollen. This is often caused by a viral infection, though bacterial and fungal infection can also trigger sinusitis. While the primary symptoms of a sinus infection include nasal congestion, facial pressure, and headaches, many people wonder if sinus infections can also cause body aches. Keep reading to explore the connection and determine when it might be necessary to seek professional ...