Dementia is one of the common diseases among the elderly, which seriously endangers their health and has become the fourth cause of death after heart disease, tumor and stroke, bringing a heavy burden to the society and families. The early stage of dementia is mainly manifested as memory impairment. In China, the changes of memory impairment do not attract enough attention, and if the disease is allowed to develop further, it can become dementia, and there are few people who seek medical treatment in the early stage of dementia in old age, and once it is found, it is in the middle and late stage, which seriously misses the time of treatment. According to research, the rate of elderly people with dementia visiting professional institutions in Shanghai is less than 30%, and the rate of elderly people with mild dementia is as low as 5%-8%. Do you get annoyed when you say something and then forget about it and end up delaying or forgetting it? Do you want to tell someone something, but then suddenly forget? Do you look for something and turn your house upside down, only to find it in your own pocket? Are there too many of these, and the result is that couples often fight over finding things, fight over forgetting things, and fight over many things that they don’t even remember, all superficially to save face, but unable to hide the nature of memory loss. Here are some of the clinical manifestations of dementia and what to look out for Clinical manifestations of dementia: 1. cognitive dysfunction: cognitive impairment; 2. memory impairment: forgetting after speaking, forgetting after speaking, losing things; 3. visual-spatial impairment: getting lost, unable to find rooms and objects; 4. verbal-communicative impairment: difficulty in finding words, inability to name; 5. executive dysfunction: reduced attention, work ability, judgment; 6. mental-behavioral impairment: behavioral changes Decreased ability in daily life: decreased ability to make phone calls, take a bath, eat, etc. The following conditions in daily life need to be noticed and promptly consulted: 1. memory impairment: difficulty in remembering recent events, mainly in recalling words or objects; 2. attention impairment: reduced ability to focus on a certain thing; 3. reduced reasoning and abstract thinking ability: reduced ability to understand and respond to new things; 4. reduced language use ability: impairment in understanding and expressing language, sometimes there may be The inability to select appropriate words to express their intentions; 5. Visual-spatial dysfunction: reduced ability to draw geometric figures, or to build blocks to test.