Is a Sinus Infection Contagious?
If you have a runny or stuffed-up nose, you may assume you have a cold — especially if it's the middle of cold and flu season.
Sinus infections, also known as sinusitis, mimic the symptoms of colds, but can a sinus infection spread as quickly as a cold?
The underlying cause of a sinus infection can vary. However, an infection commonly causes by a type of bacteria or virus.
Allergic reactions and environmental irritants are also known to be possible causes. Other contributing factors include enlarged adenoids, nasal polyps, deviated septum, changes in air pressure, and weak immune systems.
Typically, these infections do not spread from person to person. So, unlike the common cold, a sinus infection isn't contagious. However, viruses or bacteria, like flu or a cold, that cause sinus infections are contagious.