Black Spot on the Tongue

By Dave / November 17, 2007


Josephine wrote:

About 10 days ago I noticed a small black discoloration on my tongue. I have never smoked, floss and brushed teeth twice daily.

Recently, I have been using a toothpaste with a whitener and I see in the ingredients that it has sodium fluoride of 0.24%.

Applying Gly Oxide does not help.

What can I do?


Hi Josephine,

Thanks for writing in with your question!

Unfortunately, I can’t tell from here what your black spot might be.

What you should do is go visit a doctor or dentist immediately and get a proper diagnosis for your problem.

It could be nothing or it could be something more serious.

You really need to go and get it checked out.

I think it is unlikely that your toothpaste caused this problem.

You need a diagnosis from a physician or you could also see a dentist about this. If testing is required the dentist may send you to a doctor, however.

Diagnosis is something that needs to be done in person. No one can ethically, legally or morally diagnose something like that remotely. It should be done by a licensed, practicing physician.

They may need to run a test or two for something like that as well.

Please let us know what you find out from your doctor.

Warm Regards,

David Snape
Author: What You Should Know about Gum Disease
available at

*This post is for information or entertainment purposes only. It is not intended to render advice in any way, shape or form. If you have or think you might have a health problem, including a black lesion on your tongue, go see a medical doctor right away for advice, diagnosis and treatment. Failure to do so could result in serious consequences.

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