Dizziness after waking up, may be related to severe sleep deprivation and other physiological factors, may also be due to benign positional vertigo, postural hypotension and other causes. 1. Physiological factors: If you have been staying up too late for a long time in the near future, or if you have a bad mood that affects the quality of your sleep, it is easy to cause severe sleep deprivation. It may cause brain dysfunction, resulting in cerebral vasodilatation and contraction dysfunction, you may feel dizzy and dizzy after waking up. 2. Benign positional vertigo: In the process of getting up after waking up, due to the sudden change of head position, it is likely to lead to displacement of otoliths, resulting in otoliths falling to the semicircular canals, which stimulate the cell membranes in the semicircular canals, which may cause dizziness after waking up and rotation, and may be accompanied by ocular nystagmus, visual rotation and other manifestations. 3. Postural hypotension: If you get up too fast after waking up, the blood in the body can’t be redistributed in time, which can easily induce postural hypotension, resulting in transient cerebral blood supply insufficiency, which may cause dizziness after waking up and sky rotation, and may be accompanied by a transient blackness before the eyes and other manifestations. Dizziness after waking up may also be related to other factors, if the symptoms occur frequently, it is recommended to seek medical attention as soon as possible.