The headache at night may be caused by the following reasons: 1, due to excessive fatigue, many people due to excessive work or study pressure, resulting in irregular life and rest, serious lack of sleep time, resulting in the body’s plant regulatory function disorders cause headaches. 2, hypertensive patients may also appear to have headaches at night, this is due to the human body’s blood pressure level at night to a certain degree of fluctuations, hypertensive patients can easily cause blood pressure to rise, causing cerebral vascular spasm and headaches. 3, once the headache at night may also be due to playing mobile phones, playing computer for too long, resulting in vision fatigue caused by cerebral vasodilation or spasm. The headache can also be caused by the headache caused by the dilation or spasm of the cerebral blood vessels due to excessive time spent playing with cell phones or computers. 4. The pain is mostly tearing or pins-and-needles pain.