The prevalence of dementia in China is about 5% for people over 65 years old, i.e. about 6 million people suffer from different types of dementia; while the prevalence rate for people over 75 years old is 11.5% and over 85 years old is higher than 30%. There are about 1.8 million new cases of dementia each year, and with such a high incidence rate, the rate of dementia visits is very low, with only 14% of patients with mild dementia being seen. Director Han reminded his children to care about the elderly and pay attention to their changes, and not to take it for granted that the elderly are not behaving normally with “old fogeys”. If your children suspect this, make sure to diagnose it early so that the elderly can have a high quality of life. The inability to recall the reproduction of recent events is called near-event amnesia. It is also called retrograde amnesia. The normal pattern is that near events are easier to recall, while distant events are not easy to recall. Memory amnesia caused by organic brain disease is often more proximal than distant, called the regressive pattern of memory. Differential diagnosis of proximal amnesia: Inability to recall the situation at the time of injury or even the period before the injury after waking up. Tests for retrograde amnesia include: famous person tests, famous events, general knowledge tests and autobiographical memory tests. Amnesia can be present in a wide range of pathological or normal individuals. There are two forms of amnesia: one is prograde amnesia and the other is retrograde amnesia. Parallel amnesia is mainly when the brain has difficulty forming or cannot form new memories of future occurrences, but remembers past occurrences very well, including memories from childhood, etc. Retrograde amnesia is when the brain forgets about the past, but new memories can still be formed. This is a relatively rare occurrence. Parallel amnesia: Parallel amnesia is a condition in which the brain has difficulty forming or cannot form new memories of future events, but remembers past events clearly, including childhood memories, etc. Transient Generalized Amnesia: Transient Generalized Amnesia (TGA) is a syndrome. Formally named TGA by Fisher and Adam in 1958, it is characterized by transient retrograde amnesia that often resolves within 24 hours.