Naina screams and shouts for each and everything!! ---Hysteria
She has forgotten whatever raj had done for her and she doesn't want to believe him too--Amnesia
Raj will be standing with no reaction on his face and will be wandering like a watchman in KMA as though he doesn't know anyone there and will not react to anything going around him--Amnesia, mild negative hysteria!!
Warning:- These are the newly found symptoms of Hysteria and Amnesia!!So do not consult any doctor to confirm this, bcoz these symptoms are nowhere mentioned uptill now!!!