Lately (in the past few months) I have been experiencing random occurrences of what seem like hot flashes. I start sweating and feeling hot for no reason, and then within 10 minutes or so it goes away. I am female, 68 years old, and went through menopause long ago. I am otherwise healthy, but this is bothersome and seems to come on for no reason. I must wipe sweat off my body two or three times in a twenty-four hour period, often, but not always, in the middle of the night. Can you help?