Patient: Every time I take medicine, I can keep it from developing for a month or two, what is the root solution? Yang Ge: Recurrent oral ulcer is a common oral mucosal lesion. There are many causative factors, including emotional stress, anxiety, insomnia, staying up late, irregular diet, poor digestion, unbalanced nutrition, and so on. Each person’s causative factors, age of onset and duration of the disease are different, so you need to observe yourself, find the relevant triggers and try to avoid them in daily life to reduce the number of attacks. Do not rely too much on drugs, as there is no cure for the disease.