If you have noticed smooth red patches with white or gray borders on your tongue that seem to move from day to day, you may have geographic tongue. The name comes from the patches, which can look like the outlines on a map. It can be surprising to see, but it is a benign condition.
What is geographic tongue?
Geographic tongue, also called benign migratory glossitis, happens when areas of the tongue lose the tiny bumps on its surface, called papillae. Those areas look smooth and red, often outlined by a slightly raised white or gray border. Patches can heal in one spot and appear in another over days or weeks. According to Cleveland Clinic, it affects about 3% of people, likely more since many people have no symptoms.
What causes geographic tongue?
The exact cause is unknown. It tends to run in families and has been associated with conditions such as psoriasis and eczema, allergies, emotional stress, hormonal factors and certain nutritional deficiencies. It is often seen alongside fissured tongue, where the tongue has grooves or cracks. Food does not cause it, but some foods can irritate the patches.
Does geographic tongue come and go?
Yes. Patches commonly change shape, move or disappear and then return. Some people have it for weeks, others on and off for years.
Is geographic tongue serious or cancer?
Geographic tongue is benign. It is not cancer, it does not turn into cancer and it is not caused by an infection. Many people never feel it. Others notice burning or stinging, especially with spicy, salty or acidic foods, hot drinks, alcohol or strongly flavored toothpaste.
How can I ease geographic tongue soreness?
- Avoid foods and drinks that trigger stinging, such as spicy foods, citrus, tomatoes and alcohol.
- Try a mild, less flavored toothpaste if mint or whitening pastes sting.
- Ask your dentist or physician about a soothing mouth rinse or topical medication if discomfort is significant.
There is no cure, but symptoms often settle on their own.
When should a tongue patch be examined?
Have any new tongue change examined once so it can be properly diagnosed. Geographic tongue moves and changes. Get prompt evaluation if a patch:
- Stays in exactly the same place for more than two weeks
- Is white and cannot be wiped away, or is a firm lump or thickened area
- Becomes an ulcer, bleeds or is increasingly painful
- Comes with numbness, difficulty swallowing or a lump in the neck
These features are not typical of geographic tongue and deserve a closer look. Learn more about mouth sores that are not healing and our oral cancer screening exam.
Tongue and mouth exams in Palo Alto
A careful look at the tongue and other soft tissues is part of every comprehensive dental exam at Palo Alto Oral Health. If you have noticed a change, we can examine it and explain what we see. Call (650) 321-9693 or request an appointment at our Middlefield Road office.
Source
Cleveland Clinic: Geographic Tongue
This article provides general education and does not replace an examination or diagnosis.
