Cause (s) of secondary brain injury is/are-

Secondary brain injury refers to the changes that evolve over a period of time (from hours to days) after the primary brain injury. Primary and secondary brain injury are ways to classify the injury processes that occur in brain injury. Examples in traumatic brain injury Primary Secondary Intracerebral hemorrhage Subdural hemorrhage Subarachnoid hemorrhage Epidural hemorrhage Cerebral contusion Cerebral laceration Axonal stretch injury. Cerebral edema Impaired metabolism Altered cerebral blood flow Free radicalformation Excitotoxicity