Nowadays, some patients from the grassroots, regardless of age, often complain of headaches and dizziness according to the cerebral blood supply insufficiency treatment, but the results are not good. Money and time spent, but no solution to the problem, why? We know that headache and dizziness are signals released by the body, suggesting that there is an abnormality in the body or a disturbance in the functioning of the body, which needs to be analyzed specifically. The occurrence of headache and dizziness can be any age, resulting in a variety of causes, if a thousand and one are treated according to the cerebral blood supply is easy to go astray, the following selection of several common causes to make an analysis: 1, blood pressure fluctuations: the human body feels comfortable with the blood pressure is generally in the 90 ~ 139/60 ~ 89mmHg, usually the body can self-regulation to maintain. If higher or lower than this number will produce headaches and dizziness. The principle is that blood pressure is too high when the cranial pressure increases, blood pressure is too low when the cerebral blood vessel expansion, headache and dizziness is so appear. 2, sleep apnea: many old or obese, nasal septum lesion patients, due to the night lying down when the airway is not passable, tongue fall back, tonsil hypertrophy and so on caused by the whooping and snoring, and even appeared in serious cases of apnea, which will affect the brain in the night of the oxygen uptake, resulting in hypoxia. This will affect the brain’s oxygen intake at night, resulting in lack of oxygen, so that the nerve cells can not be calm at rest, the metabolism is enhanced and harmful substances can not be discharged in a timely manner, the same will occur during the daytime headache dizziness. 3, cerebral arteriosclerosis and stenosis: this situation occurs more often in elderly patients, because of vascular sclerosis affects the cerebral blood supply and oxygen supply, can not be due to changes in the external environment and self-regulation, to meet the basic needs of the nerve cells to maintain the function and metabolism, so dizziness and headache will occur. In addition, elderly patients will also be accompanied by diabetes mellitus, hyperlipidemia, blood viscosity and other conditions, perhaps one of the many reasons directly related to the lack of cerebral blood supply. 4, altitude change and jet lag change: for people who often move, these two situations are difficult to avoid. For people living in low altitude for a long time, suddenly to high altitude, because of the lack of oxygen caused by cerebral vasodilatation headache and dizziness, commonly known as the “plateau reaction”; on the contrary, people living in the high plateau for a long time to the plains, but also because of the partial pressure of oxygen suddenly increase and produce headache and dizziness, known as the “drunkenness oxygen reaction This is called “oxygen intoxication reaction”. In addition, people who have lived in a certain time zone for a long time will have headache and dizziness and sleep abnormality when they travel to another time zone and their original way of life such as sleep and diet is suddenly changed, which is called “jet lag reaction”. Of course, these symptoms are short-lived and related to the body’s poor regulation of changes in the external environment, and will generally be relieved after adaptation. 5, a variety of functional headache: common patients with pre-existing headaches, such as migraine, neurological headache, tension-type headache, etc., most of these headaches have their own seizure characteristics, neurological specialists are very easy to identify. 6, anxiety and depression: headache and dizziness in anxiety and depression patients is very common, and all ages can be seen, but also according to the cerebral insufficiency of blood supply treatment of the largest group of patients. This kind of patients are characterized by the description of symptoms, and part of the cerebrovascular disease symptoms overlap, the demand for treatment urgently, and even part of the panic attack patients will become a frequent visitor to the emergency room, if not seriously check and identify sometimes really can not be distinguished. However, these patients rarely have symptoms such as limb paralysis and slurred speech, while poor mood, insomnia, loss of appetite and other manifestations are more prominent. 7, anemia: these patients have insufficient number of red blood cells in the blood, unable to carry enough oxygen to meet the body’s needs, so that the brain is in a state of low oxygen for a long time, which naturally causes a series of regulatory processes, such as accelerating the heart rate, dilate blood vessels, promote nerve cell excitation, etc., resulting in headache and dizziness occur. 8, infection fever: bacteria and viruses such pathogens into the body, because the role of toxins will make the body temperature and vasodilation, coupled with fever caused by the body’s own metabolism to accelerate the metabolites produced by the accumulation of dizziness, headaches and dizziness can also be produced. However, for the infection caused by fever headache and dizziness need to be treated differently, the milder can be improved by drinking more water, taking medication; for the serious performance or even accompanied by nausea, vomiting, confusion or convulsions on the hospital treatment, in order to prevent the transformation into a more serious disease. To summarize, dizziness and headache are only clinical symptoms, and some of the common headaches and dizziness listed above are not all caused by insufficient blood supply to the brain. Specific problems need to be analyzed, especially in primary hospitals, and should be carefully identified and treated according to the cause. Otherwise, it is easy to go off the beaten track, and the treatment will not yield the expected results.