Generally speaking, brain injury can be recovered to a certain extent, but if you want to recover completely, you need long-term treatment and recuperation. From the perspective of traditional Chinese medicine, brain nerve injury is mainly caused by insufficient kidney essence to nourish the sea. If you want to fully recover, you must first actively cooperate with the doctor for treatment. During the treatment, you can take drugs such as Liuwei Dihuang Pill and Baizhi Dihuang Pill to supplement kidney yin, and at the same time, you can eat more foods that are good for your brain, such as walnuts, fish and milk. For trauma caused by external force, such as nerve injury in upper limbs, the main symptoms are that the function of nerve conduction and nutrition will decrease, and the upper limbs will have symptoms such as numbness of fingers and inability to bend their arms. In severe cases, there will be more obvious symptoms such as elbow muscle atrophy. Upper limb nerve injury is a disease with high incidence and serious harm to patients. Usually housework does not cause damage to the nerves of the upper limbs. But if you have some serious symptoms, you still have to go to the hospital for a detailed examination.