Alzheimer’s disease, medically known as Alzheimer’s disease, is a degenerative disease of the central nervous system that occurs in old age and pre-mature old age and is characterized by progressive cognitive dysfunction and behavioral impairment of the patient. The most obvious manifestations of Alzheimer’s disease in its early stages include gradual deterioration of memory, language expression, and visual-spatial skills: 1. Gradual deterioration of memory: Patients will experience memory loss in the early stages, but not a lot at once, but often slowly. The impact of memory deterioration in daily life will become more and more serious with the development of the disease, and will have a greater and greater impact on daily life. 2. Decline in language expression: Patients’ language ability will deteriorate at the beginning or before the onset of the disease, but it may not be obvious at first, and will become increasingly serious as the disease intensifies. The decline in language expression is manifested by the inability to utter a complete sentence and the inability to let others understand oneself quickly through language. 3. Visual-spatial skills impairment: Patients slowly begin to show symptoms such as inability to accurately determine the location of objects, inability to find their room or bed, inability to distinguish the left and right of clothes, no longer having memory of the route they often take, and inability to remember the route of the road they just walked. In addition, there may be signs of decreased attention span and decreased executive ability. If there is an elderly person in the family with symptoms similar to those described above, you need to be alert to the possibility of Alzheimer’s disease. When Alzheimer’s patients go out, family members should accompany them; usually put cell phones, phone numbers, home addresses and other information on the patients so that they do not get lost when they go out by themselves.