To see headache and dizziness, register with neurology. Headache and dizziness are a group of symptoms that are mostly caused by neurological disorders. Common causes of headaches include cranial trauma, cranial tumors, and central nervous system infections, including encephalitis and meningitis. Cerebrovascular diseases include cerebral hemorrhage, subarachnoid hemorrhage, and cerebral infarction. It may also be caused by primary headache disorders, which commonly include migraine, tension headache and cluster headache; it may also be caused by mental tension and stress. Common disorders that cause dizziness include inadequate blood supply to the vertebrobasilar system. Patients mainly present with signs and symptoms of cerebellar and brainstem ischemia and hypoxia, and may experience dizziness, nausea, vomiting, as well as balance disorders and ataxia. Dizziness may also occur if the patient’s blood pressure is elevated; it can also be caused when the blood pressure is lowered. In addition, cerebellar and brainstem infarction or hemorrhage can also be seen. Cerebellar and brainstem hemorrhage usually starts during activity; cerebellar and brainstem infarction mostly starts in the quiet state. Patients can suddenly develop dizziness, nausea, vomiting, balance disorders and ataxia, as well as explosive speech, and some patients can develop somatic symptoms, mainly by examining cranial CT to clarify the diagnosis.