I sweat and feel uncomfortable at room temperature. i only feel comfortable in a t-shirt at about 45 degrees fahrenheit or lower. is this normal?

Heat intolerance: Hi. I can't say you're abnormal, but you're certainly not average. There are variations in normal. Does this constitute a change from how you used to be? If it represents a change from how you used to be, I'd recommend having your thyroid function checked. Hyperthyroidism is the most common reason for developing heat intolerance. Good luck!