Symptoms of brain fatigue include laziness in doing things, gradual decline in memory, digestive system symptoms, neurological symptoms, mental symptoms and so on. 1. Laziness in doing things: for example, lazy to get up in the morning, walking with no energy in the legs, and lazy to speak. 2. Gradual decline in memory: patients will gradually experience memory loss, slow reaction and other symptoms. 3. Digestive system symptoms: patients may feel bitter and tasteless in the mouth, bloating, poor appetite and so on. 4. Nervous system symptoms: patients will often show dizziness, dizziness, tinnitus, starry eyes and other symptoms. 5. Mental symptoms: manifested as paranoia, anxiety, obsessive-compulsive behavior and so on.