In daily life, many people will encounter the situation that the corners of the mouth are rotten and there are small blisters on the mouth. This is herpes on the lips. Herpes labialis is caused by herpes simplex virus infection, which is called "getting angry" in traditional Chinese medicine. It usually occurs in the mouth and mouth. It is often caused by cold, fever, fatigue, lack of sleep, depression, nervousness and anxiety, etc., which leads to the decline of immunity, the proliferation of herpes virus lurking in the body, and the foaming of the mouth. At first, there is a burning sensation, and then there are blisters, erosion and scabbing. The course of the disease is about one week, and it can recur.

Herpes labialis often has pinhead-sized blisters at the mucosa of the oral lip, often in a group or two or three groups, with a slight burning sensation, which can heal itself or recur after a week or so. If herpes is caused by improper adjustment of immune mechanism or secondary infection after bursting, the course of disease will be prolonged.

To prevent oral herpes, we must first ensure sleep time and take a nap at noon. Secondly, pay attention to adjust the diet structure, eat more fresh vegetables, supplement various vitamins, should not simply eat light food, should be combined with meat and vegetables, eat enough and drink more water, and keep the nutritional balance in the body, so as to enhance the body's immunity and prevent the occurrence of oral herpes. Patients with fever must pay attention to oral hygiene, and form the good habit of gargling after eating and brushing your teeth before going to bed, especially after brushing your teeth. It is best to gargle with light salt water 1 3 times a day.