What is the main characteristic of a secondary seizure?

A secondary seizure is primarily characterized by its origin, which is a direct result of an underlying condition such as an injury, infection, metabolic disturbance, or structural abnormality in the brain. Unlike primary seizures, which are idiopathic and do not have a clear external cause, secondary seizures are symptomatic of an insult to the body. This can include traumatic brain injury, infections like meningitis, or a metabolic imbalance such as hypoglycemia.

The focus on the cause of the secondary seizure underscores the importance of identifying and treating the underlying condition to prevent further seizures. Understanding this distinction between primary and secondary seizures is crucial for effective diagnosis and management in emergency medical situations.