Recurrent aphthous ulceration
	• Estimated to affect up to 20% of the population. • Seems to have a genetic predisposition, cause unknown • 3 types - • Minor aphthae - majority of cases, crops of shallow ulcers up to 5mm, non-keratinized mucosa, typical yellow pseudomebranous slough with an erythematous border. • Major aphthae - involves the kertinized mucosa, larger ulcers, last longer. • Herpetiform ulceration
			K. Kohli, DDS