Geographic tongue (benign migratory glossitis) is a benign inflammatory condition that affects approximately 2% of the world’s population. The classic manifestation is a maplike distribution of erythema caused by atrophy of the filiform papillae of the tongue, surrounded by a white hyperkeratotic rim. The lesions typically resolve spontaneously without sequelae but can develop quickly in other areas of the tongue.
Image from NEJM Emili Masferrer, M.D., and Anna Jucgla, M.D. N Engl J Med 2009; 361:e44 November 12, 2009
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