Oral dermatology: diagnosis and specialist care

I am Dr Solène Vo Quang, a stomatologist in Paris, specialising in the diagnosis and management of diseases of the mouth. My medical approach is based on attentive listening and a comprehensive assessment of the patient, with thoughtful use of 3D imaging tools and specialist examinations. Oral dermatology, although little known, plays an essential role in this approach.

What is oral dermatology?

Medical definition of oral dermatology

Oral dermatology concerns conditions affecting the mucous membranes of the mouth: the inside of the cheeks, the tongue, the gums, the palate and the lips. It lies at the intersection of several disciplines, notably oral medicine, dermatology and otolaryngology.

In my practice, it enables me to identify oral lesions that are due neither to dental hygiene nor to a purely mechanical cause, but sometimes to a systemic condition, dermatological or infectious.

Difference between oral pathology and oral dermatology

There is often confusion between “oral pathology” and “oral dermatology”. In practice, oral pathology includes all diseases that can affect the oral cavity, from the most common to the rarest. Oral dermatology, on the other hand, focuses specifically on mucosal conditions, often visible to the naked eye as patches, ulcerations or redness.

These two fields are complementary. To establish a precise diagnosis, I often combine a detailed clinical examination with imaging examinations or tissue analyses.

Types of lesions seen in oral dermatology

White, pigmented and erythematous lesions

Certain oral mucosal lesions manifest themselves through changes in colour. White lesions, such as leukoplakia, require monitoring because some of them can progress to precancerous forms. Other abnormalities take the form of pigmented patches, sometimes benign, sometimes linked to an underlying condition. Red or erythematous lesions may indicate chronic inflammation or infection.

My role is to sort, analyse and put things into context. Any persistent or evolving lesion deserves serious assessment. ✅

Ulcerations, nodules and swellings

Oral ulcerations are common, but their cause is not always trivial. A canker sore, a traumatic lesion, herpes, or sometimes the manifestation of a broader disease: the diversity of causes makes a medical assessment essential.

I am also required to examine nodules or swellings in the mouth, such as mucoceles, abscesses or certain benign tumours. Their consistency, appearance and location guide the diagnosis, but a biopsy may be necessary to remove any uncertainty.

Origins of conditions affecting the oral mucosa

Local and traumatic factors

The oral mucosa is constantly exposed to contact, humidity and various irritants. An ill-fitting prosthesis, repeated biting, a poorly tolerated piercing or traumatic brushing can be enough to create persistent irritation, or even a chronic lesion.

When I suspect a local factor, I assess the oral environment as a whole, in relation to the patient’s history. A lesion that always recurs in the same place, for example, may suggest an area of friction that needs to be corrected.

Systemic or autoimmune diseases

Some diseases affect the mouth even though their origin is much broader. This is the case with lupus, Crohn’s disease or lichen planus. When you have several symptoms in different parts of the body, oral lesions can become a clue to the diagnosis.

In these cases, I work with other specialists — dermatologist, gastroenterologist, allergist — to shed light on the whole picture and determine the best therapeutic approach. ⚠️

Diagnosis in oral dermatology: stages and tools

Clinical examination of the oral cavity

The visual examination remains central. I take the time to observe every area: cheeks, tongue, floor of the mouth, palate, gums… The slightest abnormalities of colour, texture and symmetry must be identified.

I also ask you many questions: how long has it been there? Does it bother you when you eat? Have you noticed a change? These discussions enable me to refine my clinical suspicion.

Biopsy, imaging and additional tests

When observation is not enough, I use more in-depth examinations: a mucosal biopsy for microscopic analysis, a blood test to explore an immune origin, or imaging to assess the extent in depth.

These tools are never imposed; they are always explained. I make sure that each stage of the diagnostic pathway is understood and chosen in consultation with you.

During a consultation, I always take the time to explain each lesion and the reasons for the proposed examinations, to help you feel confident.

Treatment of oral conditions: options and follow-up

Medical treatments and surgical approaches

Treatment depends on the diagnosis. Some lesions respond to local treatment — antifungal, corticosteroid or antiseptic — while others require surgery if they persist or if their nature is uncertain.

I perform minor procedures in the practice, such as resection of small benign lesions under local anaesthesia, or I refer patients to an oral and maxillofacial surgery department in more complex cases.

Prevention of recurrences and long-term monitoring

A lesion is not limited to a one-off episode. Certain diseases of the oral mucous membranes tend to recur or evolve slowly. This is why I often recommend monitoring over time, even after visible symptoms have disappeared.

In practice, I ask my patients to tell me about any reappearance, however slight, and I sometimes offer regular follow-up every 6 to 12 months — depending on the identified risk.

When should you consult a specialist in oral dermatology?

Here is a question I am often asked: “At what point should you worry?” In reality, any oral lesion that persists for more than two weeks with no obvious cause should lead you to seek advice. The same applies if pain is unusual, if an area of your mouth changes in appearance, or if you feel discomfort when speaking, chewing or swallowing.

I always prefer to see a benign lesion too early rather than a concerning lesion too late. Early diagnosis makes all the difference. ✅ If in doubt, do not hesitate to seek advice.

Conclusion

The mouth is an often neglected area, yet it can reveal many conditions. Oral dermatology enables targeted, reasoned and humane care for these conditions, sometimes silent, sometimes chronic, often worrying for those who live with them.

Taking the time to understand what is happening in the oral mucosa is the essence of my work. And while science evolves, it will never replace the attention given to your history, your symptoms and your questions.

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