Jerking dizziness may be related to hypoglycemia, postural hypotension, benign paroxysmal positional vertigo and other causes. 1. Hypoglycemia: If you don’t eat in the morning or at noon or eat very little, followed by strenuous exercise, it may lead to the symptom of sudden dizziness, which is caused by hypoglycemia, and can be relieved by drinking some sugar water and eating food. 2. Postural hypotension: when patients with postural hypotension suddenly sit up or stand up from squatting or lying position, dizziness, black haze and other discomforts may occur due to low blood pressure, which can be relieved after a little adaptation to the new position. 3. Benign paroxysmal positional vertigo: benign paroxysmal positional vertigo is caused by otoliths rolling back and forth in the inner ear, stimulating the semicircular canals leading to vertigo, when the human body’s head position changes, the semicircular canals also undergo positional changes, and a sudden change in the position of otoliths can lead to a feeling of sudden dizziness. In addition to the above factors, other diseases can also cause sudden dizziness, if the symptoms continue to be unrelieved, please consult a doctor in time to avoid delaying the condition.