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 ...

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 ...

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 ...

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 ...

Being sick blows. Not only are you struggling to breathe, but you also have to worry about snot dripping down your nose. Even when you grab a tissue, there's always that morbid curiousity to look down ...

After 12 weeks of nebulized NAC, patients’ mean phlegm scores, as measured by the COPD assessment test, significantly decreased from 3.47 at baseline to 2.62. N-acetylcysteine (NAC) nebulizer therapy ...