Every once in a while I will get deja vú, however whenever it happens, it’s accompanied by dizziness, nausea, and sometimes followed by a headache at the base of my skull in the back. I can’t think of any common factors that could contribute. The symptoms last quite a while after an episode. I can’t even predict when it will happen. I sometimes go years without a spell, whereas I have had a spell once a day for the past 3 days.