Hi James, welcome.

It could have been either, so it's kinda your call.

I know you've been asked this a hundred times, but can you recall anything that brought it on, or happened just prior to it coming on—i.e. what were you doing?

I don't know of anything that can bring someone out of a seizure (there may be—I just don't know); AFAIK, it has to be ridden out. However migraines usually will respond to some medications—like triptans—and some may involve the kinds of symptoms you had.

migraine numbness

An EEG could likely tell if a seizure were occurring, but it would have to be done while the seizure is going on—a normal EEG does not mean that a seizure did not occur.

If it was in fact a seizure, it could affect your ability to drive legally.

Epilepsy and driving

Doc