A member asked:

What is the cause and effect of spitting up of a brown or black mucus? i've been spitting up a dark brown to almost a black mucus. i do smoke. i am trying to quit.

A doctor has provided 1 answer
Dr. Mohamed Ahmed answered

Specializes in Internal Medicine

Smokers : Smokers tend to caugh up brown mucus which will change to ligher color when you quit untill it disappear. Please keep in mind that could be bloody mucus that need further evaluation. In the other hand the source could be the stomach and will need further evaluation too. Please visit your primary physician.

Answered 10/3/2016

5.3k views

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