What Causes a Discolored Roof of the Mouth? - Dark Spots and Patches Explained

What Causes a Discolored Roof of the Mouth?

You may notice a discolored or dark spot on the roof of your mouth. Changes in pigmentation in this area are common and generally harmless. But what leads to a darkened roof of the mouth? Here are some potential causes.

Tobacco Use

Smoking cigarettes, cigars, pipes, or chewing tobacco can stain the roof of the mouth over time. Tobacco smoke contains tars and other chemicals that discolor the inner lining of the mouth, turning it black or brown.

The palate is particularly vulnerable to staining from tobacco use. The longer and more frequently someone smokes or chews tobacco, the more likely they are to develop darkened spots or patches.

Medications

Certain prescription drugs can cause pigmentation changes in the mouth. Chemotherapy medications are a common culprit, often leading to grey or brown patches on the tongue and roof of the mouth.

Other drugs like antimalarials, antifungals, and some antibiotics may also bind to melanin in the mouth, resulting in discoloration. Heavy metals used in some medications like bismuth can turn areas black.

Genetics

Some individuals are simply prone to developing pigmented spots in their mouth due to hereditary factors. Having darker skin increases your risk for intraoral melanosis, which causes grey-blue patches on the palate and gums.

Ethnic background can also play a role, as pigmentation issues are more common among those of Asian, Hispanic, and African descent.

Amalgam Tattoos

Silver amalgam material used in dental fillings can leak into the mouth and embed in the soft tissues. This causes grey, blue, or black tattoos on areas like the roof of the mouth and gums near filled teeth.

Amalgam tattoos are harmless, but should be monitored by a dentist to ensure the staining does not indicate fractured filling material.

Melanoma

In rare cases, a discolored patch on the palate may represent oral melanoma. This serious form of mouth cancer can arise from melanin-producing cells and cause dark black or brown lesions.

Oral melanoma most often affects the palate or gums. It requires immediate medical attention and biopsy for diagnosis.

Trauma

Injury to the roof of the mouth from a sharp food edge, dental appliance, or other trauma can cause red or purplish bruising that later turns dark brown. The discoloration represents blood trapped under the surface that breaks down over time.

Trauma can also trigger production of excess melanin, resulting in greyish patches on the palate near the injured area.

What Does a Discolored Roof of the Mouth Look Like?

Pigmented Spots

Tobacco use, genetics, and melanoma may appear as focal dark spots or speckles on the roof of the mouth. These pinpoint lesions are flat and painless.

Amalgam tattoos also look like solitary dark spots near fillings, ranging from grey to black in color.

Diffuse Patches

Some drugs and medical conditions cause more widespread, patchy discoloration. The roof of the mouth may have diffuse light grey, deep brown, or black patches.

Intraoral melanosis presents as grey-blue macules on the palate and gums most noticeable in those with darker skin tones.

Bruising

Trauma initially causes redness that later turns black, blue, or purple as blood breaks down internally. The bruise may be tender and swollen at first but becomes flat over time.

Is a Discolored Roof of the Mouth Serious?

In most cases, pigmentation changes on the palate are benign and represent no serious underlying problem. However, any new or suspicious mouth lesion should be evaluated to rule out issues like:

Oral Cancer

Oral melanoma and squamous cell carcinoma may first appear as painless discolored patches. Any non-healing dark lesion requires an immediate oral cancer screening.

Oral Thrush

A dark coated tongue or roof of mouth along with cottage cheese-like deposits may indicate a fungal infection requiring anti-fungal medication.

Lichen Planus

This inflammatory condition can cause white, gray, or black hairy patches on the inside of the cheeks and roof of the mouth.

Kaposi Sarcoma

This rare cancer tied to HIV/AIDS may initially show up as red or purple spots that can darken over time. Lesions often form on the palate.

What Can I Do About a Discolored Roof of My Mouth?

See Your Dentist

Schedule an appointment with your dentist if you notice any new pigmentation or color changes on your palate. Your dentist can determine if biopsies or other testing is needed.

Stop Tobacco Use

Discontinue smoking cigarettes or chewing tobacco, which are common culprits for mouth roof discoloration. This can prevent further staining.

Monitor Medications

Pay attention to any oral pigment changes that arise after starting a new medication, especially chemotherapeutics. Your doctor may adjust dosing or prescribe alternatives.

Gentle Oral Hygiene

Clean teeth and the roof of the mouth gently with a soft brush and baking soda paste to help remove some superficial staining from tobacco or foods.

Professional Teeth Cleaning

Your dentist can perform a deep clean to reduce staining on teeth. However, discoloration on the palate itself is usually untreatable with cleaning.

When to Seek Emergency Care

Seek emergency medical care if you have a discolored mouth lesion along with:

• Bleeding from the mouth
• Numbness or trouble swallowing
• Severe mouth pain
• Difficulty breathing
• Rapid enlargement of the lesion

These symptoms can indicate a serious oral infection or rapidly advancing cancer requiring urgent evaluation.

The Bottom Line

Dark spots on the roof of your mouth are rarely cause for concern. But unusual oral lesions or color changes warrant examination. See your dentist or doctor to determine appropriate treatment and rule out serious underlying problems.

Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with a healthcare professional before starting any new treatment regimen.