I am a 35 y/o woman with classic salt-losing CAH. I too, used to have "hot flashes", both during the day and also at night when I would wake up in sweat. My endo (a new one) recently backed me off quite a bit on prednisone (from 5mgs morning and night) to 5mgs morning and 2 mgs nights and they have gone away. Also, when I was taking the 10 mgs/day, I would need progesterone or birth control to menstruate, but now with the lower dosage I don't need to take anything else. They are not regular but about every 3 mos or so, which is fine with me.