I am 61 years old. I had a radical hysterectomy when I was 30. For the past 10 years I have been having terrible hot flashes, perhaps 80% of the time. My head starts to heat up, actually, steaming. I sweat profusely and sometimes I feel faint and very weak. I keep the house about 62 degrees and at times that is not cool enough. I sweat in the bed every night and at times I have to get another pillow to finish the night. I use a C-pap machine and I am type 2 Diabetic. I have taken my blood pressure and blood sugar readings during the spell and there is nothing particularly unusual about my numbers. What could this be.