I do perspire a lot but not intensely (just constantly), and it is probably an expression of stress-related anxiety rather than temperature
I have been underweight or low weight most of my life, and have been anorexic in the past. But I am also very sensitive to temperature, both hot and cold, to the point that it is the most defining criterion for what clothes I wear (sometimes more than texture/fabric). Am the last person in a group to adjust to stepping out of the house at night, and will often shiver constantly until we get to wherever we are supposed to be going. On the other hand, will also have full body overheating on simple things like a cup of hot chocolate that are solved by me taking all my clothes off to cool down, and not moving, so my skin doesn't brush itself while it is still sweaty (really hate the feeling of being sweaty). Frequently wake up drenched in sweat or, less frequently, freezing, depending what I forgot to do with my blankets the night before.
If am in a car and have fallen asleep on a long drive home on a sunny day, will wake up hot and sweaty and quite literally panic (highly stressed) until I cool down. Otherwise I am quite heliophobic as well (avoid any interaction with the sun completely).
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- Liresse