A diffuse brain injury from a car accident is not always curable and needs to be determined by the severity of the brain injury. Diffuse brain injury, meaning that the patient’s brain has a large area of diffuse damage, is a more serious disease, the patient’s body will have obvious dysfunction, such as headache, nausea, vomiting, and may even have a consciousness disorder, blurred consciousness or coma. Generally diffuse brain injury caused by car accidents can not necessarily be cured, because it will cause irreversible damage to the brain nerve cells, this phenomenon also need to go to the hospital in time for examination, if there is a large number of brain hemorrhage, then you need to take relevant treatment in time. If it is not treated in time, then cerebral edema, cerebral vasospasm and other diseases may occur secondarily, which can cause irreversible forms of damage.