Sinus infections, also known as sinusitis, occur when the tissues lining the sinuses become inflamed or infected. This inflammation can be triggered by various factors and lead to a range of uncomfortable symptoms. When someone close to you has a sinus infection, you may wonder whether or not the condition is contagious. In this blog, we’ll discuss the causes, symptoms, and contagiousness of sinus infections. For same-day sinus infection treatment, visit the walk-in clinic ...