The cause of herpes sweat formation may be related to genetic factors, environmental factors, mental psychological factors, disease factors and other factors. 1. Genetic factors: most of the herpes sweat disease for the distribution of cases, a small number of family aggregation of morbidity. It is usually caused by autosomal dominant inheritance. 2. Environmental factors: such as long exposure to strong sunlight, a long time in the humid, warm environment, or frequent contact with chemical agents, etc., are likely to lead to the formation of herpes sweat. 3. Psychological factors: for example, long-term psychological stress, excessive mental tension, anxiety, etc., may increase the incidence of herpes perspiration. 4. Disease factors: for example, by red trichophyton and other fungal infections, or suffering from hyperhidrosis disease, may cause herpes sweat formation. When suffering from herpes sweat disease, should pay attention to, as soon as possible to seek medical treatment, clear cause, by the doctor’s guidance treatment and conditioning.