Another possible secondary injuries as the result of a traumatic injury, and after the primary brain injury has occurred, are seizure disorders. Seizure Disorders: in the medical terms, a seizure is the sudden appearance of convulsions, a disturbance of the senses, or a loss of consciousness. Seizures are often caused by injuries in the temporal or frontal lobes that disrupt the electrical activity of the brain. They can occur immediately after, soon after, or much later after a brain injury. Seizure disorders are usually treated with anticonvulsant drugs.