As the resident believer in the insulin-is-involved angle, I feel strong enough right now to endure the negative criticism that is bound to come, I think.
And so I will just throw this out--in some material I have on the state of excess insulin, symptoms are listed. These include: pounding heartbbeat; temperature--chills/sweating. Could these also be the heart palpitations and night sweats that you describe?
I realize that the same symptoms appear with more than one condition; this may be a prime example. These may be two entirely different, unrelated conditions!
I have been convinced that we cannot affect the insulin level directly--it is too delicate a balance. As I see it, the only way to bring down insulin levels is to bring down glucose levels. And that is through diet! I think this accounts for the improvement of some on the Swank diet; and Ivy Larson's MAJOR improvement recounted in the book, The Gold Coast Cure, by Andrew Larson, M.D. and wife Ivy Larson.
By the way, why is it that I cannot underline a book title by highlighting and clicking on the u-underlined symbol? Remember, I was not raised with computers and consider myself "technologically impaired!"