A member asked:

My son worked at a sawmill for 6 months, ever since that his nosed has been clogged. there was times where thick black mucus would come out any idea?

A doctor has provided 1 answer

SAW MILL DUST: He inhales dust at work that causes congestion and black discharge . It can also cause sinusitis due to blockage of the sinuses.

Answered 2/23/2014

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Thank

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