The forehead sweating that occurs at night while sleeping needs to be analyzed according to the specific situation. The first situation needs to be considered as a result of external factors, such as the indoor temperature is relatively high, and the quilt you cover is thick, and not breathable, may cause forehead sweating, which is a normal physiological phenomenon, a process of heat dissipation, there is no need for treatment. The second situation is that if you have hyperthyroidism or a plant nerve disorder, you may also have forehead sweating. In this case, you need to actively treat the original disease, such as hyperthyroidism, you need to take oral medication for hyperthyroidism. If there is a plant nerve disorder, you need to take oral medication to regulate the nerves, such as methylcobalamin, vitamin B1, etc. The third condition is caused by other organic diseases, such as fever, low fever, or tuberculosis, which may cause forehead sweating, and requires specific analysis and targeted treatment.