consistent with possible seizure...? What are the key clinical factors to consider with respect to the H&P that are used to determine whether this was, indeed, a seizure or some other event?

Let's assume that the patient is a completely healthy 25 y.o. male who was well until he had an ictal episode while he was having a meal at a restaurant as witnessed by his friends.

What are the critical aspects of the H&P that would help to ascertain whether this was consistent with seizure in the event that the patient was brought to the ED following the episode by a family member who wasn't there at the time of the ictal episode?

Thank you in advance.