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I have been coughing up thick yellow phlegm and a headache for a week with no other symptoms. What can it be?

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  • Dr. Chris December 22, 2010

    Just based on these symptoms, it is difficult to assess. This could be the latter presentation of a resolving respiratory tract infection. Remember that constant coughing may also cause a headache. You should see a doctor. If necessary, the sputum will be collected and sent to a lab for analysis. This article will provide more information on various causes of yellow sputum.


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