Meta Description: Aphthous ulcers are usually classified into three different types: minor, herpetiform and major. They can be singular or multiple and tend to be small and shallow.
Aphthae are common oral lesions that affect approximately 10% to 20% of the population. The etiology of aphthous stomatitis is unknown but according to increasing evidence, its development has an immunogenic process that causes the ulceration of the involved oral mucosa. Aphthous ulcers are usually classified into three different types: minor, herpetiform and major. Minor aphthae are generally located on labial or buccal mucosa, the soft palate, the floor of the mouth, the ventral surface and the border of the tongue.
They can be singular or multiple and tend to be small (less than 1 cm in diameter) and shallow. Herpetiform aphthae are rare and their clinical aspect is similar to the Herpes virus vesciculae. Major aphthae are similar to minor aphthae but they are larger (may reach over 1 cm in diameter) and cause a deeper ulceration. This subtype makes up about 10% of all cases of aphthous stomatitis. Major aphthous ulceration usually affects non keratinized mucosal surfaces, but less commonly keratinized mucosa may also be involved.
For more information: