Ever since I was in about 7th grade (I'm in 11th now), I've had these weird hallucinations. They only last about five seconds, and are both audio and visual. It's like a flash/burst of a scene. They're very complex- they involve people, places, things. I don't know any of the people and haven't been to any of the places. After it's over, I usually forget the majority of it within seconds. Like I said, they're very short, and leave me feeling dazed and drained afterwards. They give me headaches everytime, and sometimes make me feel like I'm going to throw up. They happen about every two weeks. On the days that they happen, I have 4-7 hallucinations. After they're over, I usually can't respond very well to people and forget things I'm told for a few minutes. They leave me feeling sick all day. I was wondering if they're somehow related to seizures? When I have a "hallucination" is it really a seizure? Oh, I forgot to mention, sometimes certain things "trigger" these hallucinations. Like, someone will say a certain word and I'll suddenly have a hallucination completely unrelated to the word. Or, I'll walk into a certain place, and then have a hallucination. Sometimes, though, they just randomly happen. What do you think could be wrong? Thanks for the help.