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People with geographic tongue are missing papillae in different areas of the tongue. You may experience another harmless tongue abnormality along with a fissured tongue, known as geographic tongue.Ī normal tongue is covered with tiny, pinkish-white bumps called papillae. The middle section of the tongue is most often affected, but there may also be fissures on other areas of the tongue. This makes it easy for your doctors and dentists to diagnose the condition. The deep groove in the tongue is usually very visible. Sometimes there are multiple fissures as well. A fissured tongue can make it appear as though the tongue were split in half lengthwise.