Aphthous ulcer classification

Aphthous ulcer Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: José Eduardo Riceto Loyola Junior, M.D.[2], Sara Mehrsefat, M.D. [3]

Overview

Aphthous ulcer may be classified into 3 groups: major aphthous stomatitis, minor aphthous stomatitis and herpetiform stomatitis.

Classification

Aphthous ulcer may be classified into:

• Major aphthous stomatitis - Most common. Few ulcers or even just a single one, smaller than 1cm. Usually these lesions are self-resolving. Affects the lips, tongue lateral aspects and cheeks.
• Minor aphthous stomatitis - Few ulcers of size greater than 1 cm. Often found in the back of the mouth. Painful and deeper than minor aphthous stomatitis, usually leaving a scar as it heals.
• Herpetiform stomatitis - Least common. Wide number of ulcers, usually more than 10, with size varying between 1-3mm and may leave scars as it heals. Ulcers may coalesce and become larger. More common in young adults in the 20s or 30s.