black spot on tonsil
Alex from Unsplash; Image is for illustration

Black spots can form in the cheeks from many harmless conditions. There will likely be no other symptoms and the condition will resolve itself without treatment.

However, it is rare for a dark spot to appear in the cheek to be an indication of oral cancer. This rare form of cancer is very rare.

In rare cases, a dark black spot on tonsil could indicate a form of cancer known as oral melanoma.

What causes a dark black spot on tonsil in your cheek

Here are some possible causes of dark circles on the inside and sides of your cheeks. While spots may vary in size, they can be larger than a dot.


Smoking can cause melanosis. This condition is where brown or dark pigmentation forms in the mouth and throat.

Treatment procedure

The effects of tobacco smoke on the skin can cause many problems. Smoking can result in tooth loss, gum disease, and mouth cancer.

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Oral malignant melanoma

Melanoma refers to cancer of pigment-making cells or melanocytes that is usually found in the skin. However, these cancers may also affect mucosal tissues, such as the mouth.

Oral melanoma typically appears as a raised area with dark brown, black, or dark blue color. These marks can appear symmetrically or with an irregular border.

If there is inflammation, swelling could also be present.

One notes oral melanoma has nothing to do with sun exposure. While healthcare professionals aren’t certain what risk factors exist, they might include:

  • Toothache
  • Tobacco smoking
  • Consumption of alcohol


Operation is the best treatment for oral melanomasRadiation therapy is also an option that may be recommended by your healthcare provider.

Leakage in a dental crown

Amalgam can be described as a mixture of mercury, zinc, copper, and tin. It has been used in dental fillings for more than 150years.

These are dental fillings that have caused leakages. They are fairly common and often appear black, gray, or blue. They’re usually found near a filling.

Amalgam tattoos do not cause any symptoms and are non-invasive. They are permanent unless they’re removed using laser surgery.

Smoker’s melanosis

Smoking can cause blotchy spots called smoker’s melanosis in your cheeks, gums, and lips. About 22%Trusted Source people who smoke have this stain.

These stains do not cause symptoms and don’t require treatment. To rule out other conditions, your doctor may recommend a biopsy.

Oral cancer

Melanoma affects pigmented skin cells called melanocytes.

However, it can also occur in your mouth and nose. Rarely, oral melanoma can be detected in the cheeks by a darkening spot.

Oral melanoma can often be treated with minimal symptoms in its early stages. It often manifests as blue-black or dark brown spot. It may also be unpigmented, or even completely white. It can also be associated with pain, ulcers, and bleeding in the late stages.

56. Oral cancer is twice as common in women as it is in men.

Oral melanoma treatment may include:

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Peutz-Jeghers syndrome

Peutz-Jeghers Syndrome is a condition that causes polyps, which are non-cancerous growths in the stomach and intestines.

Children with this condition also often develop dark circles around their anus, their noses, and inside their mouths. They usually disappear with age.

People with Peutz Jeghers syndrome are more likely to experience pain, bleeding, or intestinal obstruction.

Unfortunately, there’s no cure for Peutz Jeghers syndrome. However, surgery can remove polyps in your digestive tract.

Addison’s disease

Addison’s Disease is a condition that causes a shortage of the hormones made by your adrenal glands. Addison’s disease can be characterized by hyperpigmented blotches inside the mouth.

Other symptoms include:

You can get medication to replace the hormones that your adrenal glands don’t produce.

How do I contact a doctor?

Numerous causes of dark spots in the cheek, including amalgam tattoos, can be treated with non-invasive methods.

A few causes of a black spot on the cheek are not medically treatable. However, it is a good idea to consult a doctor if you have a sore or spot that has been there for more than 3 weeks.

signs and symptoms of mouth cancer may appear if the black areas become infected or develop ulcers.

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Summary ; black spot on tonsil

There are many reasons for dark spots on the cheeks…

OTC treatments may be required for pain-related conditions, such as blood blisters. 

Even though black spots around the mouth are usually harmless, it is worth talking to a doctor about any persistent cases. They can determine if the spot needs to be treated or if it is just harmless.

Related question about black spot on tonsil

Q1.If there is a black spot on the tongue. Could this be a sign of cancer?

Many things can cause the darkening of your mouth. You can have minor lesions like a stained tooth filling (called an amalgam tattoo) or larger tumors such as a Hemangioma.

Dark spots may also appear in certain types of cancer. Dark spots are a hallmark of melanomas ( Skin Cancers). Melanomas are often associated with skin areas, like your skin. However, they can also be found in your mouth and sinuses (areas that do not get sun exposure). This area should be examined by your doctor to determine whether further testing is needed.