Americans are weathering the worst flu season in years, as a number of other respiratory illnesses circulate too, such as COVID-19, RSV and the common cold. A telltale sign you’re getting sick is ...

Whether you’re dealing with a runny nose, cough or congestion, your mucus can help determine if it’s a minor bother like a common cold, allergies or a more serious health issue. That’s right, the ...

Pneumonia is a common lung infection that can make breathing difficult and, in some cases, become life-threatening. It happens when the air sacs in the lungs fill with fluid or pus. Each year, about ...

When you're sick you'll often produce more phlegm, and might notice it's thicker or a different color: white, green, yellow or maybe even brown. We all produce mucus, even when healthy. Mucus is a ...

Mucus isn't exactly something people give much thought to — until they're sick and dealing with a constantly runny nose. But mucus is actually an important part of a healthy immune system, according ...

Medically reviewed by Susan Russell, MD Key Takeaways Coughing up white mucus can be a sign of an upper respiratory infection or chronic conditions like COPD. Viral infections that cause white mucus ...

Lindsay Curtis is a health & medical writer in South Florida. She worked as a communications professional for health nonprofits and the University of Toronto’s Faculty of Medicine and Faculty of ...

If you’re blowing your nose regularly, it’s hard not to notice your mucus—and what color it is. So it can also be alarming if you happen to spot yellow, brown, bloody, or green mucus in your used ...

Medically reviewed by Michael Menna, DO Key Takeaways Know that pneumonia symptoms can vary, but watch for cough, fever, and ...

Pneumonia is an infection of one or both lungs which affects alveoli, the tiny sacs found in clusters at the end of the branching structure of airways (respiratory tree) that supply air to the lungs.