Black under tongue: You may be seeing the veins under your tongue. But, this is also an area for the formation of oral cancer. See you dentist for an examination.
Answered 3/17/2019
4.9k views
Amalgam: Tatoo if you've had an old silver filling in the area. Could also be sublingual blood vessels or may be a nevus.
Answered 9/13/2013
4.9k views
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