Alzheimer’s thumb may have no manifestation in the early stage, and in the late stage, it may manifest as inflexibility of movement, increased tension, and so on. Dementia in old age occurs in the early clinical symptoms are not obvious, some only manifested as memory loss, the finger has no obvious characteristics of the performance, the patient’s general lifestyle is not affected. After the late stage of dementia, brain function is severely impaired, and the patient may be bedridden for a long period of time, with inflexible thumbs, poor fine motor skills, and inability to hold chopsticks or fasten buttons. In severe cases, there may be a significant increase in muscle tone, and the patient’s fingers may be paralyzed in a flexed position. After suffering from Alzheimer’s disease, you should pay attention to it and choose reasonable treatment under the guidance of doctors to slow down the development of the disease.