Pathology Oral ulcers which occurs in groups, persist for about 6 weeks and leave scars on healing are: A Recurrent aphthous major B Recurrent aphthous minor C Recurrent herpetiform ulcers D Acute herpetic gingivostomatitis 💡 Explanation Oral ulcers which occurs in groups, persist for about 6 weeks and leave scars on healing are: ✓ Correct Answer: A. Recurrent aphthous major