The main manifestations of Alzheimer’s disease include mild dementia, memory loss, especially forgetfulness of recent events that are more prominent. Patients will also have a reduced ability to make judgments, and will not be able to think and judge analytically about what they are dealing with, and will not be able to handle complex matters. At the same time, the patient will have a lack of concentration, will not be able to carry out social activities independently, will have symptoms of emotional indifference, but will occasionally experience irritability. In the later stages the patient will have severe memory impairment, and the function of judging time and place will be reduced. They are not even able to perform dressing activities or maintain personal hygiene, and if symptoms are severe patients may experience incontinence. There may also be limb stiffness, and some patients even develop primitive reflexes, such as sucking and groping.