Your head is full of holes. No, really, it is. Not just your nostrils, mouth and ear openings, there are also big openings behind the nose, inside the face. Called sinuses, these chambers are "empty ...

DEAR MAYO CLINIC: I have had ongoing nasal congestion and mucus for the past several months. I thought it was allergies, but my doctor says I likely have acute sinusitis brought on by allergic ...

Sinusitis, sometimes called a sinus infection, is a common condition that often develops after a cold or flu. Because its ...

With sinusitis, you may develop symptoms like congestion, facial pain, and thick nasal discharge. Some sinus infections may cause you to have a sore throat, bad breath, and fatigue. You might develop ...

Your nose is runny and stuffy and your throat is sore. Could it be the start of a cold or a sinus infection? Or is it allergies? The symptoms of these conditions each overlap somewhat, but health ...

A sinus infection (sinusitis) is caused by a virus or (sometimes) bacteria that creates swelling in the nasal passages. Oftentimes, sinus infections come with or after a viral upper respiratory ...

Dear Doctors: I saw my dentist for pain in an upper molar, but the X-ray was normal. My nose was also plugged up, and she said it might be my sinuses. I started doing a saline rinse, and after a few ...

Your sinuses are air-filled pockets that are located behind your face. When fluid builds up in your sinuses, germs like viruses and bacteria can multiply and lead to a sinus infection. COVID-19 is a ...

Coronavirus disease 2019 (COVID-19) is the illness caused by SARS-CoV-2, a coronavirus. It’s a respiratory disease that can cause a wide range of symptoms. The illness is transmitted via respiratory ...