Recurrent aphthous ulcer (RAU) is the most prevalent oral mucosal disease in humans, estimated to affect 20% of the general population.

• 复发性阿弗他溃疡(recurrent aphthous ulcer，RAU)是最常见的口腔粘膜疾病，患病率高达20%25左右，居口腔粘膜病的首位。