<s>[INST] my daughter is six weeks old. she was born with what would be considered normal lip color. about a week ago i notice a black mark on her bottom lip. this has spread and now her two lips are black. they dont look sore or irritated just black. she is african american [/INST] Hi... Thank you for consulting in Chat Doctor. Skin conditions are best diagnosed only after seeing directly. I suggest you to upload photographs of the same on this website, so that I can guide you scientifically.  Hope my answer was helpful for you.  I am happy to help any time. Further clarifications and consultations on Chat Doctor are welcome. If you do not have any clarifications, you can close the discussion and rate the answer. Wish your kid good health. </s>