Leukoaraiosis is leukoaraiosis (Behçet’s syndrome). Frequent mouth ulcers are not necessarily leukoaraiosis, but may also be simple recurrent mouth ulcers. 1. Leukoaraiosis: Leukoaraiosis is a systemic immune system disease, patients will have recurrent mouth ulcers, but also vulvar ulcers, eye inflammation, dry mouth and other lesions, the skin will have nodular erythema. It can also be accompanied by nausea, vomiting and other digestive symptoms, as well as peripheral neuropathy and other systemic damage. 2. Recurrent oral ulcers: oral ulcers are mostly manifested as ulcers on the lips, tongue, soft palate and other parts of the mouth, which are usually prone to recurring in the case of low immunity, unbalanced diet, eating harder food, excessive mental stress, etc., but will not involve other parts of the mouth. Don’t be too nervous about frequent mouth ulcers, keep local hygiene, pay attention to reasonable diet, and actively seek medical treatment.