The main manifestations of central nervous system damage include impaired consciousness, aphasia, impaired cranial nerve function, limb motor and sensory dysfunction, and autonomic dysfunction. 1. Impaired consciousness: including drowsiness, lethargy, coma, etc. It is mainly seen in large cerebral infarction and severe damage to brainstem. 2. Aphasia: including motor aphasia, mixed aphasia, sensory aphasia and so on. Patients may have unclear speech or speak fluently but with wrong words, or they may not be able to understand the patient’s speech. 3. Impairment of cranial nerve function: hearing loss, vision loss, eye movement disorders, diplopia, eyelid ptosis, swallowing dysfunction, and eye and mouth askew. 4. Limb motor and sensory dysfunction: if the motor and sensory centers in the water, monoparesis or hemiparesis, hemiplegia, hemiplegic sensory dysfunction, etc. can occur. 5. Autonomic dysfunction: mainly manifested as abnormal sweating, frequent urination and so on. If the above symptoms occur, it is recommended to go to the hospital in time for early and regular treatment.