Headache and dizziness after a blow to the head is first considered in the following two conditions. One condition may be intracranial injury, such as cerebral contusion, epidural hematoma, or subdural hematoma, which is generally more serious headache and dizziness, accompanied by nausea and vomiting or impaired movement of the limbs, and requires a neurosurgical examination at a regular hospital. According to the results of brain CT to determine the specific condition, targeted treatment. The second situation is that the brain CT examination is completely normal, this may be caused by brain dysfunction, you can take some oral medication to regulate the nerves for treatment, such as glutathione, vegetarian vitamin B1, in either case, you need to go to the hospital for regular review to avoid causing accidents.