Diagnosis of mouth ulcers

There is currently no test available to identify whether an oral ulcer is classified as “aphthae” or not. People suffering from recurring aphthous stomatitis with scarring or persisting mouth ulcers should consult a doctor to rule out other pathologies such as:

• Behçet's syndrome
• Crohn's disease
• Cancer ulcerations
• PFAPA
• Sweet's syndrome
• Gluten allergies

People with a mouth ulcer persisting over a month should consult a doctor.

Recurrent aphthous stomatitis (RAS) is diagnosed whenever numerous mouth ulcers evolving by crisis last 3 to 10 days, at least twice a year. Frequency and importance of these crises can require a preventive treatment because of the effects of the RAS on the daily life of the patient (difficulties in eating, pain, psychological effect).