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A 40-year-old member asked:

What exactly does it mean whenyour coughing up yellow phlegm and the next lot you cough up is white?

1 doctor answer2 doctors weighed in
Dr. Hesham Hassaballa
Pulmonary Critical Care 23 years experience
Varies: Phlegm color can vary: sometimes it can be yellow, sometimes it can be white, sometimes it can be clear. "bad" color types, so to speak, are like brown, dark green, or even bloody. If anything like this comes up, especially with fever, you should see your doctor right away.
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Last updated May 27, 2016

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