There are many clinical causes of dizziness and lightheadedness, for example, more recent exertion may cause this manifestation. However, if dizziness and lightheadedness occur suddenly or frequently, they are often associated with blood pressure changes, hypoglycemia, brain lesions, cervical degeneration and other factors. 1, blood pressure changes: When the blood pressure suddenly increases or decreases due to anger, hypertensive attacks, excessive alcohol consumption, shock, hemorrhage and other factors, it may cause the performance of dizziness and lightheadedness. In the case of elevated blood pressure, it may also cause headache, neck stiffness, palpitations and other symptoms. If the blood pressure is low, it will be accompanied by black eyes, limb weakness, cold sweat, palpitations, oliguria and other symptoms; 2, hypoglycemia: after strenuous exercise, or sudden hypoglycemic episodes, it can also cause dizziness, which is often accompanied by panic, weakness, limb twitching, cold sensations in the limbs; 3, brain lesions: such as cerebral atherosclerosis, brain tumors, encephalitis patients, early senior neural activity A series of symptoms such as disorders of higher neural activity and brain dysfunction can occur in the early stage. Some patients may feel dizzy with headache, tinnitus, blurred vision, numbness, tremor, insomnia, forgetfulness, etc. In severe cases, dullness of thinking, decreased comprehension, decreased analytical and calculation ability, emotional instability, irritability, etc.; 4. Cervical spine degeneration: Due to long-term poor posture, cervical spine hyperplasia, deformation and degeneration, the arterial blood supply is blocked so that the brain blood supply is insufficient, which is the main cause of dizziness. In addition, anemia, colds and other causes can also trigger the feeling of dizziness. If the performance of dizziness occurs frequently, it is recommended to seek medical advice to investigate the relevant pathologies in order to avoid delaying treatment.