If an elderly person has risk factors for cerebrovascular disease, he or she should consider acute cerebrovascular disease, such as acute cerebral infarction or cerebral hemorrhage, or transient ischemic attack, such as lesions in the hippocampus or temporal lobe, which may cause sudden amnesia, and should be examined and treated by a hospital in a timely manner. After systematic treatment, the patient’s amnesia symptoms can be improved significantly. Sudden amnesia may also be an early manifestation of Alzheimer’s disease or dementia, mainly manifested as spatial amnesia, such as not being able to find your way home when you go out, or being unable to recognize familiar people or things in episodes.