A Case Report of Black Hairy Tongue (Melanotrichia Linguae or Lingua Pilosa Nigra) Cureus Oral pigmentation in children: a diagnostic challenge Archives of Disease in Childhood Full article: Melanosis of the Tongue Figure 1 from The Bull's eye Tongue: A Case of Extensive Physiological Pigmentation of the Tongue Semantic Scholar A 9 year old boy presented for evaluation of dark spots on the tongue. The family first noted these spots 5 months prior and reported that they remained stable. Can you make a diagnosis?