Patients suspect that they have Alzheimer’s disease or dementia can be self-tested through a number of ways, clinical mainly with the help of some scales for questioning, self-assessment or family members to help assess, even at home can also be a preliminary judgment is not Alzheimer’s disease: 1, through the observation of the patient’s daily life behaviors, family members can help the patient to carry out self-assessment, there are a complete set of scales can be completed more quickly. Such as in the scale has a simple assessment of the ability to calculate the question, you can ask the patient 100-7 is equal to how much, the middle and late-stage dementia patients can not count, in the very light, through the patient asked 100-7 is equal to how much, and then subtracted by 7 is equal to how much, and then subtracted by 7 is equal to how much, in a row, 3-5 times, and at the same time, it is the patient a process of self-recollection. Through the speed and accuracy of the patient’s answer to the question, it can be initially judged whether the patient has problems in cognitive function or not; 2. Drawing a clock test, under normal circumstances, you can draw an 11:10 hour hand and minute hand on a piece of paper, but the patient may have some problems in executive ability, and can not draw a clock at 11:10.