What’s happening with mouth ulcers before menstruation?

Recurrent oral ulcers before menstruation may be associated with factors such as decreased immunity and nutritional deficiencies. Hormonal fluctuations during the premenstrual phase can impair immune function, thereby predisposing individuals to oral ulcers. Additionally, failure to adjust dietary habits—particularly inadequate intake of vitamins and trace elements—may exacerbate ulcer symptoms, leading to localized mucosal pallor and pain.