I too get body chills on a constant basis and have had them for years. It can be 80 plus degrees outside and I'm freezing. Recently I was told that I exude too much adrenaline throughout my body but that's because I have other non-related health issues. I've mentioned these chills to several doctors and one told me that it could perhaps be opposite of that of hot flashes, which would be applicable to me but not you. You're in your twenties and I'm in my sixties. . . maybe it's homone related.
Hi,Please pose your question to Prof.Dr.Garth Nicolson at Autoimmune Disorders Community forum.READ EVERYTHING ON HIS WEBSITE AND KEEP DETAILED RECORD OF YOUR OTHER SYMPTOMS!!!!!!!!!!!!!!!!!!!!!!!!!!!!