Symptoms such as dizziness, headache, nausea, vomiting, speech dysfunction, cognitive decline, and unconsciousness after hitting the back of the head require attention and prompt medical attention. After hitting the back of the head, if there are obvious symptoms of dizziness, headache, nausea and vomiting, it should be taken seriously. If there are symptoms of speech dysfunction or cognitive decline, it is important to pay attention to them. In addition, if there is a state of coma, such as no response to the call, stimulation of the limbs do not respond, it should be taken seriously, and promptly sent to the doctor for medical treatment. After hitting the back of the head, if the above symptoms appear, it is considered that there are serious brain damage such as cerebral contusion, cerebral hemorrhage, etc., and should be sent to the doctor in time, and should be examined by cranial CT, MRI, etc., to clearly diagnose the damage to the skull, and to take timely and reasonable countermeasures, to minimize and avoid the serious consequences. After hitting the back of the head, you should pay close attention to the changes in your condition, and if necessary, you need to be sent to the hospital in time to prevent delays in your condition.