What is the reason for recent mouth ulcers?

The causes of recurrent oral ulcers may involve multiple factors. 1. Oral ulcers are closely related to heredity. Approximately 40% of patients have a family history of oral ulcers, and genetic factors may make the oral mucosa more susceptible to damage. 2. Decreased immunity can make the body vulnerable to pathogens, leading to oral ulcers. Particularly, staying up late for extended periods or excessive fatigue may reduce immune function. 3. Negative emotions such as high mental stress, emotional tension, significant mood fluctuations, and lack of sleep may also affect immune function and subsequently trigger oral ulcers. 4. Nutritional deficiencies are also an important cause, especially deficiencies in nutrients like vitamin B and vitamin C, which may lead to inflammation of the oral mucosa and ulcer formation. 5. Accidental injury to the oral mucosa, such as bites from teeth or scratches from eating sharp foods, can also directly cause oral ulcers. Therefore, the occurrence of oral ulcers is the result of a combination of multiple factors.