The flickering dizziness of the head may be caused by physiological factors, or it may be caused by hypertension, vertebral artery cervical spondylosis, transient ischemic attack, otolithiasis and other diseases. 1. Physiological factors: lack of sleep, fatigue or emotional stress can lead to paroxysmal dizziness. 2. Hypertension: Some patients with hypertension have unstable blood pressure control, which can lead to dizziness when the blood pressure suddenly rises. 3. Vertebral artery cervical spondylosis: Vertebral artery cervical spondylosis is mainly due to cervical spine degeneration leading to vertebral artery pressure, causing insufficient blood supply to the brain, and dizziness can occur when the patient suddenly turns his neck. 4. Transient ischemic attack: due to cerebral vascular sclerosis, embolism and other vascular lesions leading to local cerebral ischemia and thus causing transient neurological deficits or loss of function, vertigo, eye movement abnormalities and so on. 5. Otolithiasis: clinically known as benign positional vertigo. It is mainly characterized by vertigo and nystagmus induced by change of head position, which can be relieved on its own after a period of seizure, and is often recurrent. It can be accompanied by nausea, vomiting and other symptoms. 6. Vestibular paroxysmal vertigo: It is mainly characterized by repeated episodes of rotational or non-rotational vertigo, which lasts for a few seconds to a few minutes and is often accompanied by postural gait instability and frequent episodes. There are many reasons for the flickering dizziness of the head, and it is recommended to go to the regular hospital in time to get medical treatment, to clarify the cause of the disease, and to reasonably treat the disease.