My perceived temperature swings back and forth. When I am walking and its very cold, I will break into a sweat.At night heat wakes me up, and I am well past menopause.It is 24/7, and beyond irritating.I spend much of the day under a heated blanket, but 3-4 times per hour, I am suddenly boiling, throwing off the blanket.The cycle repeats. I have been diagnosed with primary hyperhidrosis.