A member asked:

Coughing/bringing up phlegm, no other symptoms of cold/flu. phlegm is usually whitish clear. why?

A doctor has provided 1 answer
Dr. Richard Zimon answered

Specializes in Internal Medicine

Most common: cause is ALLERGY! If there is no inflammation from infection (yellowish/green sputum) then you most likely have an allergic tracheobronchitis ( a "relative" of asthma) An anti-histamine containing expectorant might help (eg: Phenergan (promethazine) Excpectorant) Check with your PCP (Primary Care Provider) Hope this helps Dr Z

Answered 1/29/2020

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