Which diagnostic test is considered the gold standard for epilepsy evaluation?

• A. MRI alone
• B. CT scan alone
• C. Video-EEG monitoring combined with clinical observation
• D. Blood tests

Answer: (C)

Capturing both brain activity and the actual events as they happen is what makes this approach so powerful. EEG records the brain’s electrical patterns during interictal periods and during seizures, showing features like spikes, sharp waves, and ictal rhythms that help confirm epilepsy and help classify the seizure type. But watching the person during a seizure adds crucial context—the motor, autonomic, and behavioral manifestations observed on video allow us to identify the clinical syndrome and compare it to what the EEG shows in real time. When combined over several days in a monitored setting, this video-EEG monitoring provides a precise correlation between what is seen clinically and what the brain is doing electrically, enabling accurate diagnosis, better classification, and informed decisions about treatment or surgical planning. Structural imaging like MRI or CT can reveal lesions, but they don’t show the actual electrical activity during seizures and can be normal in many epilepsy patients. Blood tests help rule out other conditions but don’t diagnose epilepsy.