Hot flashes—A hot flash is a sudden feeling of heat that rushes to the upper body and face. A hot flash may last from a few seconds to several minutes or longer. Some people have hot flashes a few times a month. Others have them several times a day. Hot flashes that happen at night (night sweats) may wake you up and cause you to feel tired and sluggish during the day.
Sleep problems—You may have insomnia (trouble falling asleep), or you may wake up long before your usual time. Night sweats may disrupt your sleep.
