Geographic tongue is a map-like appearance of your tongue due to irregular patches on its surface.
Patches on the tongue; Tongue - patchy; Benign migratory glossitis; Glossitis - benign migratory
Causes, incidence, and risk factors
The specific cause of geographic tongue is unknown, although vitamin B deficiency may be involved. Other causes may include irritation from hot or spicy foods, or alcohol. The condition appears to be less common in smokers.
The pattern on the surface of the tongue may change very rapidly. This pattern change occurs when there is a loss of the tiny, finger-like projections, called papillae, on the tongue's surface. This makes areas of the tongue flat. These areas are said to be "denuded." Denuded areas may persist for more than a month.
Map-like appearance to the surface of the tongue
Patches that move from day to day
Smooth, red patches and sores (lesions) on the tongue
Soreness and burning pain (in some cases)
Signs and tests
Your doctor will usually diagnose this condition by examining your tongue. Tests are usually not needed.
No treatment is needed, but antihistamine gel or steroid mouth rinses may help with discomfort.
Geographic tongue is a harmless condition, but it can be persistent and uncomfortable.
Calling your health care provider
Call your doctor if the symptoms last longer than 10 days. Seek immediate medical help if:
Breathing trouble occurs
The tongue is severely swollen
There are problems with speaking, chewing, or swallowing
Avoid irritating your tongue with hot or spicy food or alcohol if you are prone to this condition.
Reamy BV, Derby R, Bunt CW. Common tongue conditions in primary care. Am Fam Physician. 2010;81(5):627-634.
Mirowski GW, Mark LA. Oral disease and oral-cutaneous manifestations of gastrointestinal and liver disease. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger & Fordtran's Gastrointestinal and Liver Disease. 9th ed. Philadelphia, Pa: Saunders Elsevier;2010:chap 22.
Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; and Seth Schwartz, MD, MPH, Otolaryngologist, Virginia Mason Medical Center, Seattle, Washington. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.