There are many different causes of a sinus infection. Most sinus infections are caused by a common cold virus or some allergens. Less often, sinus infections are caused by a bacterial infection. Rarely, sinus infections are caused by a fungal infection, also known as nasal polyps.
Several symptoms can help doctors diagnose a sinus infection. Patients will often exhibit symptoms such as swollen, inflamed sinuses, runny nose, and facial pain and pressure. If you have a sinus infection, start your care with SmartDocMD. Skip the waiting room and save time and money. We offer better, safer, and more effective treatments for common ailments such as sinus infections. Still have questions? Find out more about our process.
If you have found yourself asking, “What can cause a sinus infection?” SmartDocMD can help. Our board-certified doctors will assess your symptoms and health and determine if you have a sinus infection, cold, allergies, and more.
If you think you have a sinus infection, please complete the FREE online patient interview (OPI) so that we can better understand your problem. At the end, we will tell you if you need a prescription or evaluation by one of our SmartDocMDs.