A sinus infection, also known as sinusitis, occurs when the air cavities around your nasal passages become inflamed and ...

Most of the reasons for your lingering cough are ... more mucus (which helps fight infections) during a cold. But even after, you might still have residual sinus congestion, which can cause ...

Fact checked by Vivianna ShieldsMedically reviewed by Susan Russell, MDFact checked by Vivianna ShieldsMedically reviewed by ...

If that cough gets worse, causes trouble breathing, chest pain, losing weight without trying, or if you’re coughing up blood ...

If you’ve had a lingering cough recently, there is a chance the culprit wasn’t Covid-19, flu or RSV, but mycoplasma pneumoniae. Levels of this milder lung infection—which can lead to ...

Even after the whooping cough phase is over, the infection isn’t done. During the recuperation period, people are left with a lingering cough that can last for months, which once gave the ...

symptoms include a cough, fever, headache, nasal congestion, runny nose, and sneezing. URIs are a group of infections that affect any part of your upper airways, including your nose, sinuses ...

But what kind of sickness do your symptoms point to? Here's a breakdown for COVID-19, flu and more — and why testing is so ...