<s>[INST] I noticed two areas on my tongue , on the left and right sides, in the way back of the tongue that are almost black in color. It may be referred to as the foliate papillae by looking at a diagram of the tongue. I can t tell if they re sores, but they don t hurt. I don t even remember how I noticed them because if I stick out my tongue completely, they re not noticeable. I have to pull my cheek completely back to even see that part of my tongue. Each sore is on the side, but not completely under the tongue. I m worried because I don t think the tongue should have any dark colors on it, especially when it appears to be black. [/INST] Hi...thanks for the query...as long as they are not painful and are not bothering you, there is nothing wrong with you...they can be just normal pigmentations on your tongue, or it can be due to vitamin and iron deficiencies...just keep a watch over them, if they are growing in size or not... if not, there is nothing to worry about... you can seek dentists advice for your satisfaction... to me, it seems to be fine...take care... </s>