Why always mouth ulcers

The causes of oral ulcer are complex and varied, and there are obvious individual differences, including immune, genetic, systemic diseases, infection, environment and other factors. The related causes include: 1. It is closely related to gastric ulcer, duodenal ulcer, ulcerative colitis and other diseases;2. It is related to immune function depression or immune deficiency;3. It is related to endocrine system diseases such as diabetes mellitus and menstrual disorders;4. It is related to microcirculation disorders in tongue tip and lip mucosa. 5. The recurrence rate of some students increased significantly before the examination;6. The occupational population was easy to relapse when changing their posts and working environment;7. The lack of zinc, copper, iron, selenium and other elements in food or the insufficient intake of vitamin B1, B2, B6 and folic acid also had certain correlation. It is suggested to explore the recurrence law of themselves, find out the causes of recurrence, and reduce recurrence.