Some of the earliest symptoms of Alzheimer’s disease are memory loss, slowed thinking, decreased ability to learn new things, and cognitive impairment. Alzheimer’s disease is a degenerative lesion of the central nervous system, commonly known as dementia. The cause of the disease is unclear and is mainly related to genetic and environmental factors. Pre-dementia symptoms may include forgetfulness and reticence, etc. As the disease progresses, patients with mild dementia may suffer from reduced learning ability, slow thinking and cognitive impairment. Alzheimer’s disease is usually treated with medication, such as donepezil and memantine, along with cognitive rehabilitation therapy. If you find that your family member has similar abnormal symptoms, please take your family member to seek medical treatment under the guidance of your doctor. In daily life, spend more time with the elderly.