What is a primary role of EEG in seizure diagnosis and management?

• A. Guides classification
• B. Detects epileptiform activity
• C. Measures blood pressure during seizures
• D. Predicts lifetime prognosis

Answer: (B)

The main idea is that EEG’s primary value in seizure care is to reveal the brain’s electrical abnormalities that indicate epilepsy. An electroencephalogram records brain activity and looks for epileptiform discharges—spikes, sharp waves, and evolving rhythmic patterns—that signal a tendency for seizures and help distinguish epileptic events from non-epileptic ones. These findings guide diagnosis, help classify seizure types when combined with clinical history, and inform management decisions such as selecting appropriate medications and planning further evaluation like video-EEG monitoring. EEG doesn’t measure blood pressure during seizures, and while EEG patterns can contribute to understanding prognosis and classification, its core role is detecting epileptiform activity to establish that seizures are likely epileptic and to direct treatment.