Why don't children suffer from excessive internal heat but still develop mouth ulcers?

Children not experiencing "excessive internal heat" (a traditional concept referring to certain symptoms such as inflammation or sores) can still develop mouth ulcers due to multiple factors unrelated to this traditional belief. Specifically, possible causes include: 1. **Viral infections**: Infections such as herpes simplex virus or Coxsackievirus can cause oral mucosal ulcers, commonly seen in conditions like hand-foot-and-mouth disease and herpangina. These conditions are often accompanied by symptoms like fever, but the mouth ulcers themselves are not necessarily directly related to "excessive internal heat." 2. **Deficiency in vitamins and trace elements**: A lack of vitamins B and A, or trace elements such as zinc and iron, may impair the oral mucosa's ability to repair itself, leading to mouth ulcers. Deficiencies in these nutrients are closely related to a child's eating habits and are not directly associated with "excessive internal heat." 3. **Genetic factors**: Recurrent aphthous ulcers and other ulcerative oral diseases may have a genetic predisposition. If parents have a history of mouth ulcers, children may be more prone to developing them. 4. **Psychological factors**: Emotional stressors such as excessive tension or anxiety can also trigger mouth ulcers. 5. **Traumatic factors**: Physical injuries such as bites or scratches from food can also lead to the occurrence of mouth ulcers. Parents should carefully monitor their child's symptoms, seek timely medical attention, and follow the doctor's instructions for treatment.