How long does an ulcer typically take to heal?

Jul 14, 2022 Source: Cainiu Health
Disease description:

I have developed an oral ulcer, which has been present for five days. I would like to know how long it typically takes for such ulcers to heal.

Doctor's answer (1)
Dr. Zhang Liwen
Ulcers typically heal within approximately 7 to 14 days; however, the exact duration varies depending on the individual. If the ulcer symptoms are mild and appropriate treatment is initiated promptly, healing usually occurs within about 7 days. Conversely, if symptoms are severe or treatment is delayed or inadequate, healing may take up to approximately 14 days.