An aphthous ulcer is typically a recurrent round or oval sore or ulcer inside the mouth on an area where the skin is not tightly bound to the underlying bone, such as on the inside of the lips and cheeks or underneath the tongue
Aetiology
Non-viral
Most likely due to immune dysfunction triggered by an external factor e.g. emotional stress, certain foods
Clinical presentation
Recurring, painful ulcers of the mouth that are round or ovoid and have inflammatory halos
Confined to mouth
Absence of systemic disease
Investigations
Clinical diagnosis
Management
Self limiting - each ulcer lasts less than 3 weeks
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