History: Recurrent aphthous stomatitis (RAS) is characterized by recurring episodes of ulcers, typically from childhood or adolescence, each lasting from 1 to about 4 weeks before healing. Aphthae typically are multiple round or ovoid ulcers with a circumscribed margin, erythematous halo and a yellow or grey floor. Three clinical types of RAS are usually seen; Minor aphthous ulcers, Major aphthous ulcers (Sutton’s ulcers) and Herpetiform ulcers. This adolescent boy had two painful major aphthous ulcers involved the mobile non-keratinized mucosa of the lower lip of one week duration. He had no systemic disease or other underlying condition.