Geographic tongue, also called benign migratory glossitis, is a harmless condition that makes the surface of your tongue look patchy, almost like a map. The exact cause isn't fully known, but genetics, Hyposalivation Treatment with Non Crosslinked Hyaluronic Acid and Amino Acids SolutionA Clinical Pilot Study Tingling sensation in the tongue: A full guide What Causes A Tingling Tongue? Colgate Tingling tongue: Causes and when to see a doctor Hypoglossal Nerve: What It Is, Function, Anatomy & Conditions