This is how your phlegm can tell you when you should see a doctor

Black mucus is rare. It can be the sign of a fungal infection, or exposure to pollutants such as coal, dust or cigarette ...

This Color Mucus Means Your Cold Is Getting Better, Doctor Says

In TODAY.com's Expert Tip of the Day, a doctor reveals the important clues about your health that can be found in your snot.
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When is the color of mucus a health warning sign?

A medical expert revealed the significance of different nasal mucus colors, which help determine when you should consult a ...
来自MSN

Feeling ill? This is what phlegm can tell you about your health

When you’re sick, you’ll often produce more phlegm, and might notice it’s thicker or a different colour: white, green, yellow or maybe even brown. What can this phlegm – also called mucus, snot, ...

'I'm a doctor - here's what the colour of your snot means and when to see a GP'

A ENT specialist named Dr Sina Joorabchi has explained what the possible different colours of your snot means, as it could help tell you what type of infection your body is fighting ...