复发性阿弗它口炎(RAS)是口腔粘膜疾病中最常见的溃疡性损害,具有周期性复发的规律。临床资料和流行病学的调查资料发现,很多因素都将影响溃疡的复发频率。某些病例的复发规律常同某一阶段的消化不良、便秘、腹泻、发热、睡眠不足,精神紧张、疲劳、月经周期、吃某种食物等相联系。当一种或多种因素交替或重叠或者在某 Recurrent aphthous stomatitis (RAS) is the most common ulcerative lesion in oral mucosal disease with a regular pattern of recurrence. Clinical data and epidemiological survey found that many factors will affect the frequency of ulcer recurrence. Some cases of recurrence often associated with a phase of indigestion, constipation, diarrhea, fever, lack of sleep, mental stress, fatigue, menstrual cycle, eating certain foods are linked. When one or more factors alternate or overlap or are somewhere