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, Tingling Tongue: 9 Possible Causes Gate Theory: How Vibration Can Trick Your Brain Into Not Feeling Pain! Massachusetts Dermatology Associates Vocal Techniques Increasing Vibration and Resonance Hypoglossal Nerve: What It Is, Function, Anatomy & Conditions Understanding Internal Vibration and Buzzing Symptoms