Black tongue can be caused by one of the following factors:
1) using antibiotics
2) Poor mouth hygiene
3) smoking
4) stress
5) unbalanced diet
Since you have had diarrhea, have you used medicine contains antibiotics? If yes, then it might be the reason.
1) using antibiotics
2) Poor mouth hygiene
3) smoking
4) stress
5) unbalanced diet
Since you have had diarrhea, have you used medicine contains antibiotics? If yes, then it might be the reason.
