Dreaming while sleeping can cause headache. Because the brain is not fully rested, the human body deep sleep and light sleep to alternate with each other, light sleep can be 4-6 dreams per night is a normal phenomenon, if the number of dreams is more, light sleep for a longer period of time, the brain is not fully rested there will be ischemia, lack of oxygen in the brain, there will be headache symptoms. Sleeping if more dreams, there will be the next day high blood pressure, may be elevated blood pressure and headache symptoms, it is recommended that before going to bed every night, you can use hot water to soak your feet, but also can be head massage to promote sleep.