What You Can Do For Hot Flashes Hot flashes (or hot flushes) are one of the most frequent symptoms of perimenopause (the time before menopause actually starts) and menopause. Hot flashes occur when the blood vessels near the skin’s surface dilate to cool. They can also come at night along with sweating, known as night sweats. More than half of women in the U.S. and Canada experience hot flashes during perimenopause but not all women going through menopause have hot flashes. Hot flashes last from 30 seconds to several minutes at a time. They usually subside between the first and second year... (Read More ...)