What is the cause of some people's tongues having black patch?


Question:


Answers:
the black patches on the tongue are due to overgrowth of the taste bud papillae.it is a pathological state and in this case it is preferred to visit your physician

Other Answers:
couldnt have said it better myself
Licorice
WOW
Due to the shortage of vitamin and in some cases the effect of the gutkha and tobaco and other harmful things.
This is called hairy tongue and is of no importance
i think you are right. some people got it from their birth.
maybe part chow dog
I think they are part Chow-Chow.
Might just be a rare birthmark of sorts. Some odd looking ones pop up from time to time.


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