Mouth Ulcers are a common ailment that affects many people at one time or another. These sores can grow among other soft tissues such as on your lips, gums, cheeks, tongue, floor, and roof of your mouth. You can also develop mouth sores on the esophagus, the tube connecting your mouth to your stomach.

Mouth ulcers, such as canker sores, are usually a slight inconvenience that lasts for a week or two. They can, however, signal mouth cancer or a virus infection such as herpes simplex in some circumstances.

What Causes Mouth Ulcers?

There is no definite reason behind mouth ulcer causes. However, there have been specific factors and triggers. These include the following:

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Chew tobacco

Mouth ulcers can occur as a result of — or as a reaction to — the following:

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Food You Should Avoid

There are things you can do to reduce the occurrence of mouth ulcers such as avoiding meals that irritate your mouth. Among them are acidic fruits such as pineapple, grapefruit, oranges, or lemon, as well as nuts, chips, or anything spicy.

Do Mouth Ulcers Have To Be Diagnosed?

You can typically detect if you have a mouth ulcer without the assistance of a healthcare expert. If you suffer any of the following symptoms, you should visit your doctor.

Your healthcare professional will examine your mouth, tongue, and lips during your visit. They may perform a biopsy and run some tests if they suspect you have cancer.

Do Mouth Ulcers Have Any Long-Term Consequences?

Mouth ulcers, in most situations, have no long-term consequences.

The sores may return if you have herpes simplex. Severe cold sores may leave scars in certain people. Outbreaks are more likely to happen if you:

Science-Backed Home Remedies

Mouth ulcers are normally cured on their own. There are, however, numerous home remedies you can try to treat canker sores.

Some components in over-the-counter topical medications can help soothe and heal sores. Among them are: 

Your doctor or dentist may advise you to use:

Mouth rinsing


In many circumstances, the swelling or inflammation will subside on its own. More serious reasons for swelling on the roof of your mouth, such as cancer, are uncommon. You have most certainly irritated the delicate skin of your hard palate for the ulcers to appear. Remember to give your skin time to heal while you recover. When your skin is already sensitive, avoid eating particularly hot or hard meals, and avoid foods that irritate the roof of your mouth. If the swelling does not subside within five days to a week, you should consult your doctor.