Usually after sweating, the closing time of the sweat pores needs to be decided according to the skin quality, the surrounding environment, and the basal metabolic rate of the body. Patients with hyperthyroidism, hyperadrenocorticism, etc., have a relatively fast closing of sweat pores, usually in about 1 hour. If the basic metabolic rate is relatively slow or the ambient temperature is high, the sweat pores take longer to close, such as hypothyroidism or heat stroke when the outdoor temperature is high for a long time, the pores usually take more than 2 hours to close completely.