Night Terrors a Possible Sign of a Forthcoming Seizure?

My husband was complaining of a sense of complete and total terror last night. He didn't know what the cause was, only that he was completely and totally terrified. He got up, watched a little tv, and later went back to bed. It was lessened, but still there.

Today, while he was in line during lunch, he zoned out and forgot where he was, and what he was doing. It took someone in line behind him to poke him and startle him out of it.

Are these possible signs that he could have another seizure forthcoming? Or could any of these be an actual seizure themselves?