Okay so ever since I was about 8 or so (I'm 14 now) I would like.. See black flashes then about 2 years ago I started seeing black and white flashes after a few months I would dream something then the next day or week or month it would happen kinda like a deja vu moment thing and sometimes now just when get up I get really dizzy just randomly like.. I'll be walking and I'll get dizzy or when I get up out of the chair or something. Why or how does this happen.. Anyone know??