Cerebral atrophy is a disease characterized by a decrease in brain tissue cells and a decrease in brain volume due to various causes. The most common clinical manifestation of cerebral atrophy is dementia, but different types of cerebral atrophy have corresponding characteristic clinical symptoms, mainly in the following categories: First, cerebral atrophy with cortical lesions: patients with this type of cerebral atrophy mainly show motor impairment such as limb weakness and paralysis, sensory impairment such as limb numbness and pain, as well as memory loss and unresponsiveness. abnormalities and memory loss, slow reaction, etc. Second, cerebral atrophy with cerebellar lesions: the main symptoms of this type of cerebral atrophy are unstable walking, ataxia of the limbs, slow speech, and choking and coughing when drinking and eating. Third, 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, and its clinical manifestations are related to the location of the primary lesion brain tissue, such as in the temporal lobe of the brain may appear memory loss, speech impairment or slow reaction, mental abnormalities, etc.; if it occurs in the occipital lobe of the brain may appear visual object degeneration, visual field defects or even partial blindness and other performance. Fourth, degenerative brain atrophy: this type of brain atrophy is mainly extensive brain atrophy of the brain, cerebellum and brain stem, with various clinical symptoms, including memory loss, limb weakness, numbness and pain, as well as motor clumsiness, unstable walking, choking and coughing. Therefore, the most common clinical manifestations of brain atrophy are mainly symptoms of dementia such as memory loss and unresponsiveness, but different types of dementia have their own characteristic symptoms. If patients develop the above progressive aggravation of brain dysfunction, they should be promptly diagnosed and treated.