Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 Olanzapine Induced Black Hairy Tongue During Treatment of Hebephrenic Schizophrenia Decompensation: A Rare Case Report and Brief Review of the Literature Cureus 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? Oral Melanotic Macule MEDizzy Congenital lingual melanotic macule COM March 2009 Diagnosis UW School of Dentistry