1st let me ask a question, Are you on any medications like for a stroke,heart problems,high bloob pressure,heart attack, if so this may cause your sweating problems. As any of the above being treated with medications will cause the problem you have as i go through this daily myself. As it caused by a medication problem as your body retaines the heat and is released through the head in the fourm of sweating. Like during the winter months heat is released through the head so to keep heat in you wear a hat. Consult your doctor about this problem as it may be a medical problem that you are unaware of.