A stuffy nose doesn't automatically mean you have a sinus infection. Colds and allergies can cause many of the same symptoms, including congestion, headaches and pressure around your face. Most sinus infections get better without antibiotics. The tricky part is knowing when your symptoms are following a normal course and when they may need medical attention. What Causes a Sinus Infection? A sinus infection, also called sinusitis, occurs when the tissue lining the sinuses ...