Sweating may be related to mental factors, fever reduction, hyperthyroidism and other causes. 1. Psychological factors: Due to tension, fear and anxiety, patients’ sympathetic nerves are over-excited, leading to over-exuberant secretion of sweat glands, which results in excessive sweating. 2. Antipyretic: body temperature rises during fever, and the use of antipyretic drugs will take away a lot of heat through sweating, causing body temperature to fall. 3. Hyperthyroidism: patients with hyperthyroidism have a high basal metabolic rate and accelerated metabolism, which can cause symptoms such as fear of heat, excessive sweating, panic and weight loss. If excessive sweating occurs, it is recommended to consult a doctor in time for standardized treatment to avoid adverse consequences.