The recurrence of oral ulcers is mainly related to the characteristics of the disease itself as well as the multifactorial triggering causes.
1. Characteristics of the disease itself: oral ulcers are a common oral mucosal disease, especially recurrent oral ulcers, the incidence rate is high, the disease itself is recurrent, cyclic and self-limiting, so it is easy to recur.
2. Causes of the disease: the pathogenic mechanism of oral ulcers is still unclear, but it is generally believed that it is related to genetic factors, immune factors, psychosomatic factors, hormone levels, infectious factors, dietary factors, traumatic factors and other factors, due to the complexity of the pathogenic mechanism, the above factors can be triggered, so it is prone to recurrent episodes.