Leukoplakia

Overview

Leukoplakia (say: loo-koh-PLAY-kee-uh) means a white patch or plaque inside the mouth that cannot be wiped off and is not caused by another known mouth problem. It is a description of what a doctor or dentist can see, rather than a disease on its own. Most white patches are harmless, but a small number can be an early warning sign of changes that could, over years, lead to mouth cancer. This is why doctors usually want to keep an eye on them or take a small sample to check.

Leukoplakia is fairly common. It is one of the most frequent reasons people are referred to a mouth specialist. Dentists often spot it by chance during a routine check-up.

It mostly affects adults over 40 and is more common in men. It is much more likely in people who smoke, chew tobacco, use betel quid (paan), or drink a lot of alcohol. It can also happen where a sharp tooth, a rough filling, or a loose denture keeps rubbing the cheek or gum.

Symptoms

Common symptoms

• A white or greyish patch inside the mouth that does not rub off
• The patch may look flat, slightly raised, or rough and thickened
• Usually no pain at all
• Mild soreness or stinging, especially with spicy, salty, or acidic food
• Often on the inside of the cheek, the gums, the floor of the mouth, or the side of the tongue
• Sometimes a feeling of roughness when you run your tongue over it

Symptoms in children

• Leukoplakia is rare in children
• When a white patch appears in a child, it is usually caused by irritation, a fungal infection, or a skin condition rather than true leukoplakia
• Any white patch in a child that does not clear within two weeks should be checked by a dentist or doctor

Symptoms in older adults

• More common with age, especially in people who have smoked for many years
• Ill-fitting dentures are a common cause of rubbing and white patches
• Healing can be slower, so patches may take longer to settle once the cause is removed
• Regular dental check-ups become more important, as denture fit changes over time

Causes

Main causes

• Tobacco use in any form: cigarettes, pipes, cigars, chewing tobacco, or snuff
• Betel quid (paan) chewing, often with areca nut and sometimes tobacco
• Heavy or long-term alcohol use, especially when combined with smoking
• Constant rubbing from a sharp tooth, a broken filling, or a badly fitting denture
• Long-standing inflammation or other chronic irritation inside the mouth

Risk factors

• Smoking or chewing tobacco
• Chewing betel quid or areca nut
• Drinking a lot of alcohol
• Being over 40, and being male
• Poor mouth hygiene or long-term gum disease
• A weakened immune system
• Some vitamin deficiencies, such as low vitamin B or iron
• A family history of mouth cancer

When to see a doctor

See a doctor urgently if:

• Any white patch, red patch, or ulcer in the mouth that lasts longer than two to three weeks
• A patch that bleeds, hardens, or grows quickly
• A new lump in the mouth or neck
• Unexplained weight loss or a hoarse voice that does not settle
• Pain or difficulty swallowing that is getting worse

Book a routine appointment if:

• You notice a white patch that does not hurt but has been there for a week or two
• Your denture feels loose or rubs, and the skin underneath looks white
• You have a sharp tooth or rough filling catching your cheek or tongue
• You are a smoker or chew tobacco and want a mouth check
• You are due a routine dental check-up

Diagnosis

A dentist or doctor will ask about your habits, your health, and how long the patch has been there. They will look closely at the patch and feel it, and check your teeth, gums, and dentures for anything that might be rubbing. If a likely cause is found, such as a rough tooth, they may fix it and ask you to come back in a few weeks to see whether the patch has gone. If the patch stays, or looks suspicious, they will usually take a small sample.

Tests that may be done

• A careful mouth examination, including feeling the patch and checking the neck
• A small biopsy: a tiny piece of the patch is removed, usually with local anaesthetic, and checked under a microscope
• Sometimes a test to look for a fungal infection, which can look similar
• Blood tests if a vitamin or iron deficiency is suspected
• Referral to a mouth specialist (oral medicine or oral and maxillofacial team) for further assessment

What to expect at your appointment

The first visit is quick and painless. A biopsy is a small procedure done in the chair, and you may have a mild sore spot for a few days. Results usually come back within one to two weeks. Your clinician will explain what was found and whether you need treatment or simply regular check-ups.

Treatment

The first step in treating leukoplakia is to remove whatever is irritating the mouth and to check whether the patch shows any worrying cell changes. Many patches shrink or go away once tobacco, alcohol, or a rubbing tooth or denture is dealt with. If the patch stays, or if tests show changes, your clinician may suggest removing it and keeping a close eye on your mouth.

Self-care at home

• Stop smoking and stop chewing tobacco or betel quid. Ask your doctor, pharmacist, or local stop-smoking service for help; this is the single most useful thing you can do
• Cut down on or avoid alcohol
• Ask your dentist to smooth a sharp tooth or adjust a loose denture
• Brush gently twice a day with a soft brush and fluoride toothpaste
• Avoid very spicy, salty, or acidic foods if they sting
• Keep your mouth moist by drinking water regularly
• Check your own mouth about once a month in good light, and note any changes
• Keep up regular dental appointments

Medical treatments

There is no medicine that reliably makes leukoplakia go away. Treatment focuses on stopping the cause and watching the patch. Your clinician may treat an underlying problem, such as a fungal infection or a vitamin deficiency, if one is found. Some patches are removed with a small procedure, such as a simple excision, laser, or freezing. Others are simply checked every few months so any change is caught early. Any decisions about treatment are made together with your specialist.

When is surgery considered?

Removal may be suggested if tests show cell changes called dysplasia (early changes that could, over time, become cancer), if the patch keeps growing or starts to bleed or ulcerate, or if it simply does not go away after the cause has been removed. It is usually a small procedure done with local anaesthetic, and the tissue is checked in the laboratory.

Living with this condition

Most people with leukoplakia live completely normally. The main change is being a bit more aware of your mouth and keeping appointments. A monthly self-check in a mirror, looking at the cheeks, gums, tongue, floor of the mouth, and roof of the mouth, helps you notice changes early.

Lifestyle tips

• Stay smoke-free and avoid all tobacco products
• Keep alcohol within low-risk limits, and have alcohol-free days
• Eat a varied diet with plenty of fruit and vegetables
• Keep your mouth clean and see a dentist regularly
• Look after your dentures and have them checked for fit
• Protect your lips and skin from strong sun if you spend a lot of time outdoors

Diet and exercise

There is no special diet for leukoplakia, but a balanced diet rich in fruit and vegetables supports general health and healing. If spicy or acidic foods sting, choose milder options for a while. Regular physical activity helps your overall health and mood, and can also support you if you are quitting smoking.

Mental health and emotional wellbeing

Being told you have a patch that needs watching can cause worry, and it is very normal to feel anxious, especially in the days before a check-up or while waiting for test results. Try to share your concerns with your clinician, who can explain what is being monitored and why. If worry is affecting your sleep, mood, or daily life, please talk to your doctor. If you ever feel overwhelmed or in crisis, contact your local emergency number or a crisis support service in your country straight away.

Prevention

Many cases can be prevented, because the biggest causes are things you can change. Not using tobacco in any form, keeping alcohol within low-risk limits, and avoiding betel quid greatly reduce the risk. Looking after your teeth and dentures, and having regular dental check-ups, also helps.

Vaccines

There is no vaccine for leukoplakia. The HPV vaccine protects against some virus-related cancers, including some mouth and throat cancers, and is offered routinely in many countries, but it is not a treatment or prevention for leukoplakia itself.

Screening programmes

There is no national screening programme just for leukoplakia in most countries. Instead, dentists often check the mouth during routine appointments. If you smoke, chew tobacco, or drink heavily, ask your dentist how often you should have a mouth check.

Complications

If left untreated

• The patch may stay the same for years without causing any trouble
• Some patches slowly develop cell changes called dysplasia, which can, over a long time, turn into mouth cancer
• Only a small proportion of leukoplakia patches become cancer; the risk is higher with smoking, alcohol, and certain patch types
• A patch can become sore, bleed, or make eating uncomfortable
• Delaying a check can mean changes are found later than they needed to be

Long-term outlook

The outlook is generally good. Most white patches either go away once the cause is removed or stay harmless. For the small number that do show changes, regular monitoring and early treatment mean problems are usually caught while they are still easy to manage. Keeping your appointments and stopping tobacco and heavy drinking give you the best possible outlook.

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