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 ...

Phlegm is naturally clear. So, if your phlegm is a different color, such as yellow or green, you may have a viral or bacterial infection. Brown, red, or black phlegm may be a sign of a more serious ...

Milan, Italy: The colour of the phlegm from patients with the lung disease bronchiectasis can indicate the degree of inflammation in their lungs and predict their future outcomes, according to new ...

Kristin Ahrens is a member of the National Association of Pediatric Nurse Practitioners (NAPNAP) and the National Association of School Nurses (NASN). Not many things are as uncomfortable and annoying ...