This type of dementia is the most prevalent and affects the elderly frequently, but it. It may also affect young people, but in very small proportions. A description of the patient's condition, he is that he/she goes back in his/her recognition of objects and perception of objects, and hishis/her condition worsens with the passage of time. The injury occurs in different places in the brain that lose the nerve-sense from the cellular connections. Alzheimer's disease leads to a lack ofin the recognition of family members and recognition, of the timetimes and placeplaces, and the simplestof simple routine thingsactivities such as dressing, bathing, and brushing his teeth. This leads to the absence of the necessity to have a permanent companion for the patient to lose hishis/her eligibility, but if the progress is rapid, such as within days, then this requires medical supervision for the possibility of a stroke. Also, the change includes personality and, usually, it is for the worstworse, such as anger issues and a lack of acceptance by society. Therefore, medicines for depression are prescribed to himhim/her in addition to hishis/her medicines. Speaking of Alzheimer's, medicine, it hasthere is no cure, and it is classified as a serious disease, as they dida major cause has not find a major cause exceptyet been found. The only thing known for sure so far is that it hasis characterised by major factors such as age and genetics. Alzheimer's disease has also been classified into three categories (mild, moderate and severe).