A black, coated tongue is a temporary, harmless condition typically resulting from an overgrowth of bacteria and sometimes yeast in the mouth. These organisms accumulate on the tiny projections of the tongue â€” called papillae â€” and cause discoloration. Certain types of bacteria and yeast make red blood cell pigments (porphyrins), which can give the tongue a black appearance. In some cases, the tongue may also appear “hairy” due to more rapid growth of papillae or an interruption of the normal shedding of cells by the tongue.
In some cases, the cause of black, coated tongue can’t be determined. However, some potential causes include:
- Changes in the normal bacteria or yeast content of the mouth following antibiotic treatment
- Poor oral hygiene
There you have it – BRUSH YOUR TEETH
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Maybe I should have just provided a link instead of the picture?