What Is Geographic Tongue?
Geographic tongue is a condition that gets its name from patches that look like a map on the top and sides of your tongue. You can also have it in other areas of your mouth. Doctors sometimes call it benign migratory glossitis or erythema migrans.
The patches can come and go or change very quickly over days, weeks, or months. You might have them for up to a year.
Geographic tongue is benign, which means it’s harmless. It isn't linked to an infection or cancer. It isn’t contagious, so you can’t catch it from or pass it to someone else.
Geographic Tongue Symptoms
The signs of geographic tongue are uneven red patches. They’re usually on your tongue but can also be on your gums, on your cheeks, on the roof of your mouth, or under your tongue. These patches may:
- Have a white or light-colored border
- Vary in size, shape, and color
- Start in one area and then move to another
- Not have the small bumps (papillae) that usually cover your tongue
You may not know that you have geographic tongue until your dentist or doctor spots it during an oral exam.
About 1 in 10 people with geographic tongue have mild discomfort or a burning or painful feeling. This is often because of things like:
- Hot, spicy, or acidic foods
- Cigarette smoke
Geographic Tongue Causes and Risk Factors
Geographic tongue happens when parts of your tongue are missing layers of papillae. Doctors aren’t sure exactly why you lose them. However, because geographic tongue tends to run in families, it might have something to do with your genes.
Geographic tongue is also more common in people who have psoriasis or cracks and grooves on the top and sides of their tongue (fissured tongue).
Geographic tongue affects about 1% to 3% of people. It can happen at any age, but it’s more likely in young adults. It’s more common in women than in men.
Geographic Tongue Diagnosis
Your dentist or doctor will ask about your symptoms and look at your mouth and tongue. You may need tests to rule out other medical conditions.
Geographic Tongue Treatment
Any pain or discomfort will probably get better on its own. But if you have severe, constant pain, medication can help. Your doctor or dentist may prescribe:
- Over-the-counter pain relievers
- Mouth rinses with anesthetic
- Corticosteroids that you put on your tongue
- Zinc supplements
It might also help to limit or avoid things like: