In most women who undergo natural menopause, hot flashes subside within 2 to 5 years after the last menstrual period. In a small number of women, however, hot flashes can continue for 8 to 15 years after the last menstrual period.
There is some evidence that women who go through menopause due to surgery may have more severe hot flashes for more years than women who go through natural menopause.

