In the early stages of dementia, there is impairment in visual-spatial cognition. When reaching for an object, the person may not be able to reach the object and grab it, or may reach too far and knock it over. Getting lost in a familiar environment can also be seen in the early stage. In the middle stage, disorientation can occur even in one’s own home, such as not being able to find one’s room after going to the toilet or not knowing which bed is one’s own. In simple drawing tests, patients cannot accurately copy three-dimensional drawings, and after the middle stage, they have difficulty even drawing simple flat drawings. In daily life, there are obvious difficulties in dressing, picking up clothes and not being able to judge their up and down, left and right, such as wearing the chicken collar backwards, wearing the pants backwards, or even using the trouser legs as the sleeves of the top.