Short-term memory loss post- seizure

Please, does anyone identify with this problem?My son, 21yo now, has always found that after a seizure he has no memory of the past 2-6 hours preceding the seizure.e.g. went out to tea with his friend to celebrate their anniversary and had a seizure later that night. The following day he could not remember anything of that evening from when I had dropped him at her place at 6.30pm. Still doesn't till this day 2yrs later. (by all accounts they had a lovely time..)He finds this aspect of his condition the most upsetting. This is just one of many examples. My heart aches seeing the sad look on his face as we piece together his movements on a particular day.This doesn't help when trying to identify auras etc. either as he doesn't remember.Does anyone find this happens to you?I have read many posts about memory in general and see this in him too, but not seen much about this other aspect.Thanks for your time,Maryanne.