The causes of dizziness and headache appear differently in different age groups. The common causes in the elderly are cerebral infarction, cerebral arteriosclerosis, hypertension, hypotension, various cardiovascular diseases, cerebral ischemic lesions, cerebellar lesions, etc. As a result of complete blockage of blood vessels somewhere in the brain, it causes ischemia, hypoxia, and even necrosis of brain tissue in that area, resulting in headache, dizziness, and hemiparesis. You need to go to the hospital for cranial CT and MRI to make a clear diagnosis and monitor blood pressure, blood sugar and blood lipids. In the other case, brain hemorrhage caused suddenly by normally high blood pressure. After a clear diagnosis by head CT, absolute bed rest is needed to lower intracranial pressure, control cerebral edema, and prevent brain herniation from occurring. Common causes of dizziness and headache in young people are cervical spine disease, anemia, traumatic brain injury, and certain types of epilepsy. Closely related to mental factors, emotional disorders or psychological factors can aggravate headache disorders, such as anxiety, tension, stress, fatigue, and menstruation can cause headaches. Preschool children also have headache and dizziness mostly related to cold, anemia, and improper diet, but because of poor description, most symptoms are not very clear, and many gradually relieve themselves after rest. Therefore, if you have dizziness and headache, you should look for the cause from many aspects and actively cooperate with the examination and treatment.