What Causes Postnasal Drip With Black Mucus And Allergies?
hello! I have noticed that I have black stuff in my mucous. I have horrible allergies and typical have to spit up mucous from the post nasal drip. Anyways, its not every time but it does happen perioidically and has been happening for a while. Should I be worried?
Mon, 1 Sep 2014
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What Causes Postnasal Drip With Black Mucus And Allergies?