I am 25 yrs old and my "episodes" started to happen when I was pregnant 4 years ago. What happens is when I am doing something I do on a regular basis, IE vacuuming, laundry, dishes, ect. It starts as a Deja Vu feeling, but i get a tingling sensation from my stomach up, and then i get light headed, and dizzy. I have to try and think about something else to stop it, sometimes it works sometimes it doesnt. When it doesnt everytime i swallow, i get intense nausea feelings.