<s>[INST] My 8 month old baby over the last two days has had her tongue turn black, starting in the back and moving forward. She does not breast feed, has not recently taken medications. She seems to be in no pain and the tongue feels the same temp as her body. [/INST] Hello, Skin and mucosal conditions are best diagnosed and treated after seeing them directly. I suggest you upload the image so that I can guide you better. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Sumanth Amperayani, Pediatrician, Pulmonology </s>