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.