Epilepsy is a neurological disease, and is divided into idiopathic epilepsy and secondary epilepsy. Idiopathic epilepsy refers to epilepsy of unknown origin, while secondary epilepsy has a clear cause, such as intracranial infection, brain contusion after head trauma, and epilepsy after cerebrovascular disease. The epilepsy is also caused by poisoning, such as carbon monoxide poisoning, ischemic-hypoxic encephalopathy caused by various drugs, and all of them belong to the scope of neurology. In addition, traumatic brain injury is a disease of brain surgery, and epilepsy can be seen in two departments: neurosurgery and neurology.