Cerebral atrophy is a group of diseases characterized by a decrease in brain cells and a decrease in brain volume. Early cerebral atrophy is characterized by mild brain tissue lesions and certain compensatory functions in various functional areas of the brain, therefore, early cerebral atrophy lacks specific clinical manifestations. There are mainly the following categories: 1. Cerebral atrophy with cortical lesions: this type of patients mainly show motor disorders such as limb weakness, paralysis or sensory abnormalities such as numbness and pain in the limbs, as well as memory loss and unresponsiveness. 2, cerebral atrophy with cerebellar lesions: the main symptoms of this type of cerebral atrophy patients are unstable walking, limb ataxia, slow speech, and choking and coughing when drinking and eating. 3, limited brain atrophy: this type of brain atrophy is mainly caused by brain trauma or cerebrovascular disease and other diseases that leave local brain tissue necrosis, the clinical manifestations of this type of brain atrophy are related to the location of the primary lesion brain tissue, such as in the temporal lobe of the brain will appear memory loss, speech impairment or slow reaction, mental abnormalities, etc.; if it occurs in the occipital lobe of the brain will appear visual deformation, visual field defects or even partial blindness, etc. If it occurs in the occipital lobe of the brain, there will be visual deformation, visual field loss or even partial blindness. 4, degenerative brain atrophy: this type of brain atrophy is based on brain, cerebellum, brain stem and other extensive brain atrophy, with a variety of clinical symptoms, including memory loss, limb weakness, numbness and pain, as well as motor clumsiness, unstable walking, choking and coughing. In summary, there are no special clinical symptoms in the early stage of brain atrophy, and as the disease progresses, symptoms of dementia such as memory loss and unresponsiveness gradually appear, and different types of dementia have their own characteristic symptoms, so if patients have the above-mentioned progressive aggravation of brain dysfunction, they should be promptly treated.