The Seven Year BurnDoctors call it vasomotor instability. Women call it misery. Close to 80% of menopausal women suffer from hot flashes, and are often told to be patient, that the flashes will gradually ease over time. But CBS4 Medical Editor Dr. Dave Hnida reports on a new study that shows the average time women have to deal with hot flashes is a little over 7 years. And for an unlucky group, as long as 14.