I am a 43 year old male. My entire life I have felt hot and I have always sweated profusely. The least little amount of activity can trigger sweating. Even when I go skiing and it's 20-degrees, I can only wear a single layer of clothing (short sleeve shirt). I tend to get dehydrated very quickly, so I have to drink water also continuously. In social settings, I tend to avoid activity in an effort to avoid getting hot and sweaty. Do I have Hyperthyroidism or some other condition? This constant condition can't be normal and it certainly prohibits me from living life to the fullest.