Red Splotches On Top Of Mouth: Causes And Symptoms


The appearance of red splotches on top of the mouth can be worrying, but it does not always mean the presence of cancer. There are several possible causes, and some of them can be treated fairly quickly.

Here is everything you need to know about red splotches on top of the mouth. Red splotches on top of the mouth may spread or appear on other parts of the body depending on the cause. For example, infectious causes ranging from bacteria to fungi can cause spots to appear not only in the month but also in areas such as the genitals and under the armpit.

causes of red splotches on top of mouth

causes of red splotches on top of mouth 

Red splotches on the roof of the mouth can be indicative of various conditions, ranging from minor irritations to more serious health issues. Here are some possible causes to consider:

Oral candidiasis 

Oral candidiasis, also known as oral thrush, is a fungal infection that can cause red bumps and white spots on the roof of your mouth and  other parts of the mouth. This infection is more common in babies, people with diabetes, people who are immunocompromised or on antibiotics, as well as smokers. However, this infection is treated with antifungal tablets or syrups, such as fluconazole.


Enanthema  is a screen rash that appears as small red spots or pimples in the mouth and/or soft palate. This irritation can be caused by number of factors, including viruses, bacteria, fungi, or food allergies. Enanthem may disappear on its own, but if symptoms persist, it is recommended to consult a doctor to determine the underlying course and prescribed the appropriate treatment.


Stomatitis is an inflammation of the oral mucosa that causes redness and pain. This disease can also cause red spots on the roof of the mouth. Possible cause of stomatitis are viral infections, chemical irritants, food allergies, or side effects of medication. Brushing your teeth well is recommended and maintaining good oral hygiene to treat stomatitis. Anti Inflammatory medications, antiviral, or antihistamines may also be prescribed to relieve symptoms.


Erythroplasia is a lesion of the oral mucosa that appears as red or painful spots. this disease can be a precancerous condition, especially if the  lesion survives more than 2 weeks. The Canadian Cancer Society recommends seeing a doctor if red or painful spots appear in the mouth. If the doctors suspect a precancerous condition, he or she may recommend a biopsy to determine if lesion is cancerous.

Oral cancer

Oral cancer is a potential cause of red spots on the palate. Symptoms of oral cancer include painless red patches on the roof of the mouth, gums, or floor of the mouth. These plagues can persist  for more than 2 weeks. Treatment for oral cancer may include surgery, radiation therapy, or chemotherapy.

Autoimmune causes

Many inflammatory conditions that cause the body to attack itself can also affect the mouth and cause injury and inflammation leading to appearance of red spot or sores.

Systemic: Systemic autoimmune diseases that affect multiple parts of the body, such as inflammatory bowel disease and lupus, often have symptoms that affect the mouth.

Dermatological: Many dermatological conditions can result in rashes or chronic inflammatory lesions that prefer the mucus membrane of the body, including the mouth. Some persistence and difficult conditions such as lichen planus may result to red splotches on the roof of  mouth.

Environmental causes

Environmental causes can be linked to certain exposure or lifestyle habit.

Diet: the mouth is in direct contact with foods and liquids which can cause allergic reactions resulting in redness lesions on the mouth. Some allergens or spicy foods, strawberries, egg, acidic foods and so on. On the other hand, a diet deficient in certain nutrients like vitamin B12, folic acid or iron can also lead to red spots or sore in the mouth.

Common symptoms Of red spots in the mouth

Red spot in the mouth can also be found outside the mouth, on the lips or lower face, and may also be associated with symptoms such as:

  • Fever
  • Itch
  • Pain
  • Burning or tingling
  • Blisters
  • Drought
  • Chipping
  • Cough
  • Sore throat
  • Runny nose

How to treat red spots on the mouth?

Treatment for red spots on the mouth will depend on the underlying cause. In some situations, such as with stomatitis or oral candidiasis, medical treatment may be necessary to relieve symptoms. In other cases, such as with enanthem, the spot may disappear without treatment. It is important to see a doctor if red splotches or plagues persist on the roof of your mouth for more than 2 weeks. The doctor will be able to determine the underlying cause and prescribe appropriate treatment.

How to prevent red splotches on the roof of mouth

Preventing response on the roof of the mouth depends on the underlying cause.

General recommendations for maintaining good oral health, such as brushing your teeth regularly, flossing, and avoiding sugary foods, can help prevent oral infection. It is also recommended to avoid smoking and limit alcohol consumption to reduce the risk of oral cancer.


The red spot on the group of the mouth is very common, but can be very disturbing. It is a skin condition caused by inflammation of the submandibular gland and appears as a red spot, located at the back of the mouth, at the base of the tongue.

The first symptoms of red spot can be very painful and resemble a sore throat. When complicated, they can lead to a feeling of pressure or even a blockage in the throat. Other symptoms may include jaw pain, difficulty swallowing, and tongue pain.

Treatment for red spot is usually quite simple and includes antiseptic or antibacterial medications to reduce inflammation and associated discomfort. Or that treatment may include antihistamines to prevent allergic reactions, as well as topical corticosteroids to help ease inflammation.

The most effective way to prevent red spot is to brush your teeth and tongue regularly and avoid sugary foods that can rotate the palate.


Red spots on the roof of the mouth can be caused by a variety of conditions, some of which are more serious than others. It is important to see a doctor if the spot persists for more than 2 weeks or if other serious symptoms appear, such as pain or bleeding.

Depending on the underlying cause, medical treatment may be necessary to relieve symptoms or eliminate the condition. Maintaining good oral hygiene and avoiding risk factors for oral cancer can help prevent red spots on the roof of your mouth.

Dr. Jun Ren is a dedicated and experienced registered dietitian and nutritionist who is committed to helping people achieve their health goals through personalized nutrition plans. With a passion for promoting healthy eating habits and preventing chronic diseases, Dr. Ren has been able to assist numerous clients in improving their overall quality of life.

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