Hi Gerard. I sent you question to Dr. Ritaccio. Here is his response:
I can only answer this question generally. A prolonged EEG can only detect irritability supportive of a seizure tendency in the future, or at best, might record a seizure event itself to understand its type and location of onset. An EEG does not tell you “why” you have seizures. If the reason for ongoing seizure tendencies is based on a past event, such as injury, the reason is not relevant to treatment. Treatments are based on preventing seizures pharmacologically, or in select seizure types, removing or modulating the area where a seizure begins. This approach is taken independent of why seizures started in the first place.