Burning mouth means a burning, stinging or sore feeling in the mouth. It is often felt on the tongue, lips, palate or inside of the cheeks. Tongue burning can be linked to dry mouth, irritation, thrush, a deficiency, medicine, dentures, dental problems or sometimes burning mouth syndrome.
The symptom should be taken seriously, but not panicked over. If the mouth has an ulcer, a white coating, a red patch, strong pain or swallowing difficulty, assessment is sensible.
What it can feel like#
The mouth may feel as if it was burned by a hot drink even though there is no clear burn. The symptom often gets stronger during the day. Some people notice a change in taste, dryness or a sensitive tongue surface.
If the symptom is linked to a sharp tooth edge, a denture rubbing the same spot or a new oral product, the cause may be direct irritation.
Dry mouth is a common factor#
Dry mouth makes burning, soreness and mucosal changes more likely. When there is less saliva, the mouth is not rinsed normally and the lining gets irritated more easily.
Dryness can be linked to medicines, mouth breathing, snoring, age, diabetes, Sjogren's syndrome or treatment in the head and neck area.
Irritating foods and oral products#
Acidic, spicy, hot and strongly flavoured foods can make the burning worse. Alcohol, smoking and strong mouthwashes can irritate the lining too.
Gentle care helps most. A soft toothbrush, mild products and keeping the mouth moist can reduce irritation.
Oral thrush#
Oral thrush can cause burning, pain, redness, taste changes and white patches. It is more common when the mouth is dry, after inhaled steroids, when a denture rubs or when general health is weakened.
A white coating on the tongue is not always thrush. Dry mouth and lack of cleaning can also coat the tongue. If the coating is heavy or the symptom continues, assessment is better than guessing.
Deficiencies and general illness#
Burning mouth can sometimes be linked to low iron, vitamin B12 or folate. Then fatigue, paleness, cracked mouth corners or a smooth tongue may also be present.
Diabetes, reflux, hormonal changes and some autoimmune diseases can also show up in the mouth.
Dentures, bite and tooth edges#
A poorly fitting denture, a sharp tooth edge or repeated cheek biting can irritate the lining. The symptom often stays in the same place.
If you wear a denture, cleaning it well and taking it out at night may help. If it keeps rubbing the same area, the fit should be checked.
What can be tried at home#
If there is no ulcer or major change and you otherwise feel well, try calming the lining for a few days. Avoid spicy, acidic and hot food. Use a mild toothpaste, leave alcohol mouthwash aside and keep the mouth moist with water or oral moisturising products.
Do not scrub the tongue hard. If a new product seems to irritate the mouth, stop it and watch for change.
When to seek care#
Seek care if the burning lasts more than two weeks, gets worse or comes with an ulcer, bleeding, white or red patches, swallowing difficulty, weight loss or general decline.
Further reading and sources#
Further reading: