Momentary vertigo is a sudden feeling of dizziness and lightheadedness, looking at things will feel like they are all spinning, and then quickly return to normal after a few seconds. There are several reasons for this symptom: 1. The most common cause is posterior circulation ischemia, and the transient ischemic attack caused by it is often caused by overexertion or mental stress, resulting in elevated blood pressure and cerebral vascular spasm. 2. Getting up too fast or walking too fast, failing to have enough 3. Anemia and hypoglycemia can also cause a lack of energy in brain tissue, resulting in vertigo due to the inability of the brain to move normally. 4. Otoliths can also cause momentary vertigo, where the otolith touches the wall of the semicircular canal when the head position changes, causing transient episodes of dizziness that last for The symptoms last for a few seconds and recur with changes in head position and body position. There are many causes of momentary vertigo, usually the above, and they should be prevented and treated according to the different causes.