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8. What White and Frothy Phlegm Means

White and frothy phlegm is a sign of COPD. It can change color too, especially if you have a secondary infection occurring at the same time. In that case, you might have yellow and frothy or green and frothy phlegm. Since COPD can be very serious, it's important to see your doctor, especially if you have trouble breathing.

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This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.