I have asthma and I am spitting out phlegm that is clear with black spects. Sometimes it is solid black pieces that come out seperate. Why black??? Is it from smoking in my past??? I had an xray done no pneumonia. I am on a z pak n prednisone. Can I do anything else?
Hi, With prednisone, black aspects in sputum should need to be checked for aspergilli.  A type of fungus. As the infection with aspergilli needs to be treated as early as possible I advise you to get sputum examination and culture sensitivity. This may also occur due to pollution / smoking but cannot be confirmed only with history. Regards