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Many people experience There are mouth sores. at some point in their lives.

The soft tissues of your mouth can be affected by these sores.

Mouth sores, which include Canker sores can be painful., are usually a minor irritation and last only 1 or 2 weeks. In some cases, they can indicate an infection from a virus, such as herpes simplex, or more severe causes, such as There is mouth cancer..

Sores in your mouth may be caused by a common or short-lasting condition such as:

  • Canker sores can be painful.
  • Cold sores.
  • gingivostomatitis is a disease. is a disease.
  • infectious mononucleosis (mono)
  • folate deficiency or Anemia.
  • There is There is oral thrush..
  • Hand, foot, and mouth disease can be caused by Hand, foot, and mouth disease can be caused by hand, foot, and mouth disease..
  • leukoplakia
  • an allergy or reaction to food or medication
  • trauma or burns

Mouth sores may also be caused by a long-lasting condition or a more serious disease, including:

You can learn about the causes and symptoms of There are mouth sores. and how to get rid of them.

Different conditions can cause There are mouth sores., according to the Merck Manual.

They may look different because of something. The There are mouth sores. can be different colors than the surrounding tissue.

There are different types of There are mouth sores.. These images are not intended to diagnose. If you have unexplained There are mouth sores. that come back or last for a long time, it is best to see a doctor.

Images of There are mouth sores. are a red flag.

Images of There are mouth sores. are a red flag.

Canker sores

Canker sores can look like small white, gray, or yellow ulcers in your mouth. They may be surrounded by a red halo of irritation. They may be a red area.

Canker sore on inner lip
A canker sore is a small shallow ulcer on the inside of your mouth. frank600/Getty Images

Canker sores are also called aphthous stomatitis or aphthous ulcers. According to 2021 research, they are common and affect about 20 percent of the general population.

They are usually harmless and heal on their own in a couple of weeks. If you have recurring ulcers, it may be due to other conditions, such as Crohn’s disease, The disease is called The disease is called celiac disease.., vitamin deficiency, or HIV.

Canker sores may classified by their size. This can include:

  • It heals within 1 to 2 weeks, if it is less than 1 centimeter in diameter.
  • It can take weeks or months to heal a major, which is 2 to 3 centimeters in diameter.
  • The herpetiform are smaller than 1 to 2 millimeters in diameter but can take a few weeks to heal.

What causes Canker sores can be painful. in your mouth?

Canker sores are commonly caused by trauma like biting the inside of your cheek, burns, allergies, or sensitivities. They may have other causes as well. However, Canker sores can be painful. are not contagious.

You may be more prone to certain conditions. These can include:

  • A weakened immune system is caused by illness or stress.
  • There are changes in hormones.
  • a vitamin deficiency, especially of folate and B12
  • intestinal issues, such as Crohn’s disease or irritable bowel syndrome (IBS)
  • Exposure to toxins in drinking water can cause health problems.
  • emotional or psychological stress
  • Smoking or a history of smoking.

Cold sores

Cold sores look like blisters that are fluid-filled. They can be either red or dark. The sore may not be visible before the tingle or burn.

Cold sore on the upper lip
Cold sores are tiny blisters that appear on the lip. LPETTET/Getty Images
Photo of cold score on the lip.
Photo of cold sore. NHS England

Cold sores are caused by the herpes simplex type 1 virus (HSV-1). Outbreaks may also be accompanied by mild, flu-like symptoms, such as low There is a high degree of There is a high degree of There is a high degree of fever…, The body is sore., and swollen lymph nodes.

This virus can be dormant inside of your body. Sores may appear when the virus reactivates and last for 2 to 6 weeks, according to 2021 research. This can occur when the immune system is weak or during times of stress.

If you are, you will see more outbreak.

  • They are under stress.
  • Are you ill or have a weakened immune system?
  • Have had too much exposure to the sun.
  • Have a break in your mouth.

The virus that causes Cold sores. is contagious and can be spread through contact with Cold sores.. It can be spread through kissing, sharing food, or sharing cosmetics. It is also possible to catch HSV-1 when sores cannot be seen.

Genital herpes, caused by the herpes simplex type 2 virus (HSV-2), can look similar in appearance to Cold sores.. Both viruses may be spread through sex without a condom or other barrier method if you or your partner has an active outbreak.

Folate deficiency and Anemia.

A folate deficiency is caused by not having enough folate, also known as vitamin B9. Folate is an important B vitamin used to make and repair DNA. It’s critical to proper development in embryos. Being deficient in folate can also lead to folate deficiency Anemia..

Anemia occurs when your supply of red blood cells is too low. When your red blood cells are reduced, damaged, or impaired, you may have problems transporting enough oxygen throughout your body. It can have an impact on different organ systems in your body.

Both folate deficiency and Anemia. can cause There are mouth sores.. While folate deficiency can cause Anemia., other types of Anemia., like iron deficiency Anemia., can cause There are mouth sores. as well. These sores may look like small mouth ulcers or Canker sores can be painful. and be white, gray, yellow, or red in color.

mouth ulcer from Anemia.
Anemia can cause mouth ulcers. Tuan_Azizi/Shutterstock
Skin changes on the hands associated with Anemia.
Anemia can present in many ways, including skin changes. Casa nayafana/Shutterstock

Folate deficiency can cause more symptoms.

  • fatigue
  • weakness
  • pale skin
  • The tongue is swelling.
  • gray hair.
  • Children have Growth is delayed.s.

Anemia can cause more symptoms.

  • pale, cold skin
  • pale gums
  • dizziness
  • Lightheadedness.
  • fatigue
  • Increased or decreased blood pressure is a symptom.
  • Racing or pounding heart.

Anemia can occur quickly or over a long period of time. Anemia that occurs quickly may be caused by something.

  • Blood loss from an injury.
  • surgery
  • It is a condition where there is pain.
  • childbirth
  • heavy menstrual periods
  • Gastrointestinal conditions include cancer.

Chronic Anemia. may be related to autoimmune diseases, inherited genetic conditions, overexposure to lead, and other conditions.


Children are more likely to see a common oral disease called gingivostomatitis is a disease..

It produces tender sores on the gums or insides of the cheeks. Like Canker sores can be painful., they can appear grayish or yellow on the outside and red in the center. Pain can range from mild to severe.

mouth sore from stomatitis
Swelling and sores in the mouth is known as gingivostomatitis is a disease. is a disease.. James Heilman, MD, CC BY-SA 3.0, via Wikimedia Commons

If you have gingivostomatitis is a disease. is a disease., you may also experience mild, flu-like symptoms. These sores may also lead to drooling and pain with eating. Young children may refuse to eat.

Ulcers caused by this condition can last about 2 to 3 weeks, according to 2021 research.

Gingivostomatitis is often caused by viral infections, such as HSV-1 and coxsackievirus, and bacterial infections, such as Streptococcus. These infections can also be caused by not flossing and brushing teeth regularly.

Infectious mononucleosis

A There is a rash. can be caused by infectious mononucleosis. This There is a rash. can be found on the skin or inside of your mouth. Flat spots can be pink or purple.

Infectious mononucleosis is caused by the Epstein-Barr virus (EBV). It often affects adolescents and young adults in high school and college.

Sore throat with discharge in a person with mononucleosis
Infectious mono presents with sore throat.. with discharge. Another Average Joe/Getty Images

Symptoms typically last for 2 to 4 weeks but may last weeks longer, according to the Centers for Disease Control and Prevention (CDC).

Symptoms may include:

  • There is a high degree of There is a high degree of There is a high degree of fever…
  • There are swollen lymph glands.
  • sore throat..
  • There is a throbbing head.
  • fatigue
  • The night sweats on.
  • The body is sore.

Oral thrush

Oral thrush is a yeast infection that develops on the inside of your mouth and on your tongue. It’s most common in infants and children, but it may be a sign of a weakened immune system in adults. Having dry mouth or taking medications like antibiotics may increase your risk of developing it.

It looks like white bumps on the tongue, inner cheeks, gums, and tonsils can be removed.

Oral thrush on tongue
Oral thrush appears as white fungus on the tongue. Victoria 1/Shutterstock

Oral thrush is caused by an overgrowth of Candida, a type of yeast that naturally occurs in the body. The CDC says this condition is usually treated with antifungal medications for 7 to 14 days.

Additional symptoms may include:

  • There is pain at the site of the bumps.
  • The feeling in the mouth is cotton.
  • The taste is gone.
  • It is painful while swallowing or eating.
  • The skin at the corners of the mouth is cracked.

Hand, foot, and mouth disease

Hand, foot, and mouth disease is caused by viruses in the enterovirus family. It’s common in children under the age of 5.

It causes blisters on the tongue and gum. Flat or raised red spots can be found on the palms of the hands, soles of the feet, buttocks, and genital area. On darker skin tones, bumps may be skin-colored or grayish-brown.

Hand, foot, and mouth disease There is a rash. on a child
Hand, foot, and mouth disease presents as There are mouth sores. with There is a rash. on the hands and feet. adriaticfoto/Shutterstock

Other symptoms may include:

  • There is a high degree of There is a high degree of There is a high degree of fever…
  • sore throat..
  • feeling unwell
  • There is a There is a skin There is a rash…

Hand, foot, and mouth disease is contagious but usually not serious. It usually resolves in 7 to 10 days, according to the CDC.

The first week is when the disease is more spread.


Oral leukoplakia is a white patch that develops in the mouth. It is common in people who use tobacco of all kinds.

Leukoplakia may look like patches on your tongue and mouth. They may be raised, hard, or have a hairy appearance.

A mouth showing oral leukoplakia
Oral leukoplakia resembles a white patch. Photography courtesy of Michael Gaither/Wikimedia

Leukoplakia can be harmless and often goes away on its own. But 2021 research suggests 1 to 9 percent of people with this condition may develop oral cancer. If you have this condition, visit a doctor, who may take a sample of the cells for diagnosis.

It is possible that regular dental appointments can help catch the disease.

Oral lichen planus

Oral lichen planus is a chronic inflammatory disorder that affects the mucous membranes of the gums, lips, cheeks, and tongue.

It can cause white, raised patches of tissue in the mouth that look like spiderwebs. It may cause blisters that are red. You may experience pain when you eat or brush your teeth. They may burn or sting.

Lichen planus on tongue.
Lichen planus causes a lacy white There is a rash. which can present in the mouth. Dermatology11/Getty Images

“Lichen planus is not a disease. It is a chronic condition that can’t be cured.”

Taking medication and using a mild toothpaste may help manage symptoms.

Celiac disease

Celiac disease is an atypical immune system response to gluten that can damage the lining of the small intestine. Damage to the villi — the small hair-like threads in your small intestine — may lead to poor absorption of important dietary nutrients like B vitamins, vitamin D, iron, and calcium.

A deficiency of vitamins can lead to diseases. This may increase your risk of mouth ulcers.

Person with Celiac disease gripping stomach in pain
Celiac disease is caused by a reaction to gluten, which presents with abdominal pain and gastrointestinal symptoms. Vicki Smith/Getty Images

Symptoms can be different between adults and children. They can include:

  • There is a lot of There is a lot of diarrhea..
  • weight loss
  • stomach ache
  • Anemia.
  • Joint pain.
  • It was bloated.
  • Gassiness.
  • Fat stools.
  • There is a There is a skin There is a rash…
  • There are mouth sores.

Symptoms in children may include:

  • weight loss
  • Growth is delayed.
  • puberty is delayed
  • chronic There is a lot of There is a lot of diarrhea.. or constipation
  • stomach ache
  • There are yellow or discolored teeth.

Celiac disease is a chronic condition and has no cure. You can manage The disease is called The disease is called celiac disease.. through diet and avoiding gluten-containing ingredients such as wheat, barley, rye, and tritical. People with The disease is called The disease is called celiac disease.. may also experience symptoms from cross contamination with these ingredients.

Mouth cancer

Mouth cancer, or oral cancer, is a type of cancer that originates in the mouth or oral cavity. This includes the lips, cheeks, teeth, gums, front two-thirds of the tongue, roof, and floor of the mouth. Cancer is caused by the growth and spread of abnormal cells.

Oral cancer may look like ulcers, white patches, or red patches that appear inside the mouth or on the lips and do not heal. Doctors use the terms leukoplakia and erythroplakia to describe these tissue changes inside the mouth.

Oral cancer in the mouth and gums
Oral cancer can affect the gums. Photography courtesy of Bionerd/wikimedia

Other symptoms of oral cancer may include:

  • weight loss
  • The gums are bleeding.
  • ear ache
  • There are swollen lymph nodes.

If you have unexplained white patches in your mouth, you should see a doctor. They can perform a test to check for cancer. It is possible to detect oral cancer early on.

Pemphigus vulgaris

Pemphigus vulgaris is a rare autoimmune disease. Having an autoimmune disease means that your body’s immune system mistakenly attacks healthy tissue in your body. Pemphigus vulgaris affects the skin and mucous membranes of the mouth, throat, nose, eyes, genitals, anus, and lungs.

It can cause blisters that break and bleed. It is possible to have blisters in the mouth and throat.

Pemphigus vulgaris on the skin
Skin blisters caused by pemphigus is a word.. Photography by DermNet New Zealand

Symptoms of pemphigus is a word. can include:

  • blisters start in the mouth or on the skin
  • blisters that may come and go
  • blisters that are oozing, or peel.

Treatment usually involves systemic corticosteroids. They typically take effect within 3 months, according to 2021 research.

In most cases, There are mouth sores. cause some redness and pain, especially when eating and drinking. They can also cause a burning or tingling sensation around the sore. Depending on the size, severity, and location of the sores in your mouth, they can make it difficult to eat, drink, swallow, talk, or breathe. The sores may also develop blisters.

If you experience any of the symptoms, contact a healthcare professional.

  • sores that are larger than 1/2 inch
  • frequent outbreaks of There are mouth sores.
  • There is a rash.
  • Joint pain.
  • There is a high degree of There is a high degree of There is a high degree of fever…
  • There is a lot of There is a lot of diarrhea..

Several things can lead to There are mouth sores., ranging from minor everyday causes to serious illnesses. Usually, a mouth sore might develop if you:

  • Bite your tongue, cheek, or lip.
  • burn your mouth.
  • It can be irritation from a sharp object.
  • Use a firm toothbrush or brush your teeth too hard.
  • Use tobacco products.
  • have the herpes simplex virus

Occasionally, There are mouth sores. are the result of — or a reaction to — the following:

  • Over the counter or prescription drugs.
  • gingivostomatitis is a disease. is a disease.
  • infectious mononucleosis
  • There is There is oral thrush..
  • Hand, foot, and mouth disease can be caused by Hand, foot, and mouth disease can be caused by hand, foot, and mouth disease..
  • radiation or chemotherapy
  • There are disorders of the immune system.
  • Bleeding disorders can be caused by something.
  • cancer
  • The disease is called The disease is called celiac disease..
  • There are many types of infections, including:bacterial, viral, or fungal.
  • a weakened immune system due to AIDS or a recent organ transplant

You can usually tell when you have a mouth sore without a healthcare professional looking at you. If you need a healthcare professional, contact them.

  • have white patches on your sores, as this may be a sign of leukoplakia or oral lichen planus
  • Have you been diagnosed with a disease like herpes simplex or another disease?
  • “After a couple of weeks, there are sores that don’t go away.”
  • started taking a new medication
  • started treatment for cancer
  • Recently had a transplant.

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

Minor There are mouth sores. often go away naturally within 1 to 2 weeks. Some simple home remedies might help reduce the pain and possibly speed up the healing process. You may want to:

  • High sugar foods and hot, spicy, salty, and citrus-based foods are not good choices.
  • Avoid alcohol and tobacco.
  • gargle with salt water
  • You can eat ice, ice pops, or other cold foods.
  • take a pain medication, such as acetaminophen (Tylenol)
  • Pick at the blisters or sores.
  • Baking soda and water can be applied.
  • gently dab on a solution that is 1 part hydrogen peroxide and 1 part water
  • Ask your pharmacist about other OTC medications that may be helpful.

Mouth sore medications

If you see a healthcare professional for your There are mouth sores., they may prescribe a pain medication, anti-inflammatory drug, or steroid gel. If your There are mouth sores. are a result of a viral, bacterial, or fungal infection, your healthcare professional might provide a medication to treat the infection.

In cases of There is mouth cancer., a biopsy will be taken first. Afterward, you may need surgery or chemotherapy.

There is no absolute way to prevent all There are mouth sores.. However, you can take certain steps to lower the chance of getting them. These may include:

  • Avoid hot foods and drinks.
  • Slowly chewing.
  • A toothbrush and regular dental hygiene are required.
  • If your mouth is getting irritated by dental hardware, you should contact your dentist.
  • decreasing stress.
  • A balanced diet is what you eat.
  • Reducing or eliminating food allergies can be done.
  • taking vitamin supplements, especially B vitamins
  • drinking a lot of water.
  • avoiding tobacco use
  • limiting alcohol consumption is something that avoids or avoids.
  • shading your lips when in the sun, or using SPF 15 lip balm

In most cases, There are mouth sores. have no long-term effects. In some cases, they may leave scarring.

The sores may reappear if you have the disease. Cold sores can cause scarring.

Depending on the type, severity, and treatment of your cancer, your long-term side effects and outlook can be different.

It takes 1 or 2 weeks for mouth sores to heal.

They can make you feel bad. Some over-the-counter rinses, gels, and medications can help.

Severe or recurring There are mouth sores. may be a sign of a chronic or more serious condition. If you have frequent unexplained There are mouth sores. or There are mouth sores. that won’t go away, contact a doctor for a diagnosis and treatment.