What does geographic tongue look like?
Geographic tongue (the medical name is benign migratory glossitis) shows up as smooth, red, slightly sunken patches on the top and sides of the tongue. Each patch has a thin white or pale wavy border, so the surface looks like a map. The red areas are places where the tiny bumps (papillae) have briefly worn away.
The pattern is the giveaway: the patches heal in one spot and appear in another, sometimes within a day. It can come and go for months or years, and many people never have any discomfort.
What causes geographic tongue?
Nobody knows the exact cause. It runs in some families and is seen more often in people with eczema, asthma or hay fever, and some people notice flare-ups with stress or around hormonal changes. It is not caused by poor brushing, it is not an infection, and you cannot pass it to anyone else.
Low iron, vitamin B12 or folate can make a tongue sore in other ways, so if the tongue is also smooth all over or you keep getting ulcers, our guide on mouth ulcers and vitamin deficiency is worth a read. For other tongue changes that look similar, see tongue colour changes and what they mean.
Geographic tongue treatment and what helps
Most people need no treatment. When the tongue stings, the usual advice is to avoid the triggers: very spicy, hot, salty or acidic food (citrus, tomato, pickles), and tobacco or paan. Brush the tongue gently with a soft brush and a mild toothpaste, and sip water through the day.
If it hurts enough to affect eating, a dentist or doctor can look at it and may prescribe a soothing or numbing rinse or gel. Widely available paracetamol, taken as directed on the label, is an option for most adults; ask a pharmacist or doctor first if you have liver disease, are pregnant, or take other medicines. Do not start antifungal products on a guess, since this is not a fungal infection. The wider picture on sore mouths is in our mouth ulcers guide, and a painful sore patch is covered in tongue sores.
When to see a dentist or doctor
Get it looked at if you are not sure it is geographic tongue, if one patch stays in the same place, or if a white or red patch, an ulcer or a lump has not healed in about two to three weeks. A fixed patch is not the moving pattern described here and needs checking by a dentist or doctor, especially if you use tobacco, gutka or paan.
Also get checked for pain that is severe, a tongue that is swelling, or difficulty swallowing or breathing. Swelling that spreads, fever, or any trouble breathing or swallowing needs same-day care, and a hospital emergency department if breathing or swallowing is affected.
Common questions
Is geographic tongue contagious?
No. It is not an infection, so it cannot be passed on by kissing, sharing food or sharing utensils.
Does geographic tongue go away on its own?
The individual patches heal and move, but the condition itself often comes and goes for years. Some people have it for life, others find it fades.
Can geographic tongue turn into cancer?
Geographic tongue is not considered a cancer risk. Any patch or ulcer that stays in one place for more than two to three weeks, though, should be checked by a dentist or doctor.
Which foods make geographic tongue worse?
Spicy, hot, salty and acidic foods such as citrus, tomato and pickles are the usual triggers for stinging. Keeping a note of what sets it off helps you avoid it.
About this page
This page is general information, not a diagnosis or a quotation. Prices are prevailing Lucknow market ranges. Your own treatment and cost are determined after an examination. For questions about your own case, call +91 83036 12717.