Hair sweating at night may be caused by physiological reasons on the one hand, on the other hand may be due to hyperthyroidism, tuberculosis, calcium deficiency and other pathological reasons. 1. Physiological reasons: when the indoor temperature is high or the quilt is too thick when sleeping, the body temperature will rise, the human body has normal physiological regulation function, it will adjust the body temperature through sweating. Because the head is rich in blood vessels, so the phenomenon of hair sweating at night. 2. Pathological reasons Patients with tuberculosis often have increased body temperature at night, so there will be night sweating, that is, the phenomenon of night sweating. Patients with hyperthyroidism (hyperthyroidism for short) have a vigorous metabolism and a rapid heart rate, and may also experience night sweating. Diabetic patients may have nighttime hypoglycemia, which can also lead to night sweating; for growing children, they are prone to calcium deficiency, which can also lead to night sweating. For the repeated occurrence of night sweating hair of the crowd, you need to go to the hospital in a timely manner, follow the doctor’s instructions to carry out the appropriate examination to clarify the cause of the disease, and active treatment.