I thought this article was worth reading.
Title as above.
Link : wellnessresources.com/news/...
I know that having thyroid disease badly affects temperature regulation - hypothyroidism causing low body temperature and (I'm guessing since I've never been hyperthyroid) high body temperature in hyperthyroidism.
My own record low temperature that I'm aware of was about 94 F /34.4 C in my 20s. One of the things that really, really annoys me is that I have to use hot water bottles for about 9 - 10 months a year because I get so cold in bed, particularly my extremities.
Despite this I also have a memory of shivering in a snowstorm waiting for a bus in my teens - and yet at the same time I had sweat trickling down my back as well.