Dizziness may be caused by cervical spondylosis, hypertension, anemia, hypotension, hypoglycemia and other reasons. 1. Cervical spondylosis: patients with cervical spondylosis after cervical disc protrusion, compression of the cervical nerves, blood vessels, resulting in insufficient blood and oxygen supply to the brain, the brain for a long time lack of oxygen will appear dizziness, nausea symptoms. 2. Hypertension: when the blood pressure rises, it can lead to a significant increase in the pressure inside the cerebral blood vessels, resulting in vascular congestion and irritation of the local meninges. At the onset of the patient will have dizziness, headache and other symptoms. 3. Anemia: when the oxygen carrying capacity of blood decreases and blood volume decreases in anemia, the compensation and tolerance capacity of the patient’s blood circulation, respiratory system and other systems will be affected, and dizziness may occur. 4. Hypotension: Dizziness may occur due to the decrease in cerebral perfusion pressure caused by low blood pressure and ischemia and hypoxia in the brain caused by insufficient cerebral blood supply. 5. Hypoglycemia: When the human body has symptoms of hypoglycemia, the glucose content in the blood is insufficient. Glucose is an important energy for the human body’s activities, which maintains the metabolism of human substances and the normal function of organs. Low blood sugar will appear dizziness, may also be accompanied by panic, cold sweat and other symptoms. There are many other causes of dizziness, such as neurological disorders and insufficient blood supply to the brain. Patients should go to the hospital in time, under the diagnosis of the doctor for treatment, to avoid delay and aggravation of the condition.