Waking up in the middle of the night with profuse sweating on the upper half of the body may be due to physiological factors, and may also be considered to be related to pathological factors. 1. Physiological factors: summer weather is hot, indoor and outdoor temperature is relatively high, may cause sweating. Sleeping with too much clothing and too thick a blanket can also lead to sweating in the middle of the night. Sweating caused by the above factors is physiological hyperhidrosis, and it is recommended to pay attention to temperature regulation and reduce clothing or bedding. 2. Pathological factors: Pathological factors may also lead to sweating, such as hyperthyroidism, the body’s metabolism is more vigorous, which may lead to excessive sweating at night. Menopause syndrome is also a major cause of night sweating. Often in the middle of the night, the upper half of the body sweating, you can open the window to ventilate the room to reduce the temperature. If you suspect that it is caused by pathological factors, you can go to the hospital in time to find out the cause.