hi i dont know if this will be any use as we are all different but i have suffered from absences since i was at school i never got diagnosed until i was 18 though people used to say i was slow and a daydreamer.i never get anything  like dizzyness with this as its only a 2 second seziure i miss out on conversations well  part of it i just blank out for a few seconds i have wondered off with them too.but have never had any kind of feelings with it like your describing with your son i only get that after i have a gm and most of my friends that have warnings get them before a big fit. but like i said i have never had any feeling with them only with my gm and my myoclonics.sometimes you can have sleep seziures so maybe he might have them in his sleep sorry i couldnt be more help.hope he is ok now if you ever want to chat im about hayley x