Alzheimer’s disease is commonly known as “dementia”. Alzheimer’s disease, commonly known as dementia, is a disease caused by genetics, diet, lifestyle, endocrinology or disease. Clinically, it is characterized by memory loss, personality changes, and physical movement disorders. Alzheimer’s disease is called dementia because Alzheimer’s disease is a common disease of old age. In addition to Alzheimer’s disease, cerebrovascular disease, intracranial tumors, intracranial infections, and a variety of other disorders can cause dementia symptoms in the elderly. If the patient has symptoms of dementia, it is recommended that the patient go to the hospital in time to clarify the cause of the disease and then do symptomatic treatment, to avoid delaying the condition of private treatment.