Sweating when you speak may be related to factors such as nervousness, hypoglycemia, and hyperthyroidism. 1. Nervousness: when people are nervous, the sympathetic nerves of the human body are in a state of excitement, and the cerebral cortex is stimulated, thus triggering the symptoms of sweating. 2. Hypoglycemia: the body’s glucose content is lowered easily triggered by hypoglycemia, manifested as panic, sweating, etc. Sweating when you speak may be caused by the body’s lowered blood glucose content. 3. Hyperthyroidism: Hyperthyroidism can speed up the body’s metabolism, causing the body’s sympathetic nervous system to produce a state of excitement, leading to sweating when speaking. It is recommended to relax, supplement balanced nutrients, exercise properly and improve one’s immunity. If the sweating symptoms are more serious, you should go to the hospital to check the cause of the disease and treat the symptoms according to the doctor’s advice.