A 28-year-old woman developed a painful 0.5 * 0.5 cm oval ulcer in her lower anterior vestibular mucosa. She has had similar lesions before that have typically appeared at the time of her menstrual period. The lesions generally last a week to 10 days. She most likely has which of the following?

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Recurrent aphthous ulcers are characterized by painful, small, round or oval ulcers in the oral mucosa, often triggered by stress, trauma, or hormonal changes such as menstruation, and typically heal within 1-2 weeks.

A 28-Year-Old Woman Developed a Painful 0