Symptoms of Alzheimer’s disease 1, memory impairment Memory impairment occurs in the early stage, especially near memory impairment, dozens of hours or even minutes before the occurrence of things can not be recalled. The patient’s daily life manifests itself in the form of losing things, forgetting after saying something, repeatedly asking questions that he or she has figured out, or repeating the same things over and over again. 2.Language Disorders Difficulty in finding words is often a language disorder that occurs early in Alzheimer’s disease, which is mainly manifested in the inability to find suitable words when speaking, due to the lack of substantive vocabulary and manifested as a series of empty words; or due to the difficulty in finding words with too many explanations for expression, and ultimately become a nagging. 3, visuospatial skill disorder in the early stage of dementia and can have visuospatial skill disorder, its symptoms include can’t accurately judge the position of the object. Some people with dementia may get lost in familiar surroundings in the early stages of the disease. Difficulty in writing Difficulty in writing leads to poorly written content, such as writing a letter that does not make sense, which is often the first symptom that draws the attention of family members, especially some of the more culturally sophisticated elderly. The study concluded that the writing error is related to the distant memory disorder. 5, loss of recognition and disuse is a person refers to the patient can not recognize the object, although at this time the tactile or visual elements of the object can be recognized; disuse refers to although there is a normal activity ability and subjective desire, but can not carry out the purposeful actions that have been learned. Examination of dementia patients with dementia and dementia is very difficult, sometimes difficult to distinguish their dementia and dementia with aphasia, visuospatial skills impairment and amnesia caused by the consequences. 6, dyscalculia dyscalculia often appears in the middle stage of dementia, but it may be manifested in the early stage, such as not being able to count or miscalculate when shopping. There are many reasons for the appearance of dyscalculia, which may be due to visuospatial disorders (inability to correctly formulate equations), or due to aphasia and inability to understand the requirements of arithmetic assignments, or it may be a primary inability to calculate. Alzheimer’s disease patients may have poor judgment, loss of general ability, and distraction at an early stage.