Sweating on the head more hair are wet, there are many reasons, plant nerve disorders, diabetes, hypoglycemia, heat, a lot of exercise, these reasons are more common. 1. Vegetative nerve disorders: when suffering from severe vegetative nerve disorders, patients will experience symptoms such as chest tightness, dizziness, shortness of breath, sweating all over the body or paroxysmal sweating. 2. Diabetes mellitus: the typical symptoms of diabetes mellitus are excessive drinking, excessive urination, weight loss, and in severe cases, neuropathy, i.e., increased sweating. 3. Hypoglycemia: When blood sugar suddenly lowers, it will stimulate the sympathetic nerve excitement, producing a large amount of adrenaline, and the patient will have the phenomenon of excessive sweating in the head. 4. Heat, large amount of exercise: heat, will also make the head sweat. After a lot of exercise, the metabolism will accelerate, the human body will produce a lot of heat, sweating is also relatively common. There are many reasons for sweating on the head, if the symptoms of sweating on the head are not relieved, or accompanied by other symptoms, you should go to the hospital in a timely manner, to clarify the cause of the targeted treatment.