Write down what you were doing, eating, drinking, feeling, or wearing when each hot flash began. After several weeks, you may begin to see a pattern that can help you avoid specific triggers. Preventing hot flashes You may be able to reduce the frequency of your hot flashes if you figure out your triggers, and avoid them. No treatment is guaranteed to prevent hot flashes, but there are options that may help you manage your symptoms. The goal of treatment is usually to lessen the severity and frequency of your hot flashes.