A mixture of saliva and mucus produced by the lungs as a result of viral or bacterial infections.
Common CausesRelated ConditionsFor informational purposes only. Consult a medical professional for advice.
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Sputum: Definition, colors, causes, and when to see a doctor
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WEBCoughing up phlegm is a normal symptom of colds and other health conditions, but it can also indicate a more serious underlying issue like heart or lung disease. Learn about the possible causes, colors and …
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