I am always cold must have excessive humidity and heat to remain comfortable. I also do not sweat. This condition has been with me since childhood. Over the past 10 years it seems to have gotten worse, where I need electric blankets with other down type blankets to keep me warm. I wear wool socks and a battery operated heated jacket in the house. No sign of anemia or thyroid condition. My BMI is about 27 and my weight is about 15 pounds more than it should be. I am peri-menopausal. I also suffer from anxiety.....could this be the cause?