Last night I was sitting at a friends house while she did my hair and as her and I were talking I began to feel queasy and then I felt the urge to throw up and suddenly I was burning up, breaking out in a cold sweat. I began pulling off my jacket b/c I was getting so hot and the nauseous feeling progressively got worse and then the urge to use the bathroom hit me as well. I got up to walk to the bathroom and next minute I know I was dizzy to the point that I had to grab hold of a near by wall to brace myself. My friend noticed the sudden change in my appearance. I turned red and was sweating. She touched me and I was burning up. She helped me to the bathroom to sit down. I couldn't catch my breath at that point. As I sat down I began to feel my body cool down and the sudden wave a nausea, gradually disappeared and I began to gradually go back to normal. This has not been the first time I've had these same exact symptoms. It's something that happens every once in a while starting several months ago, but I've noticed that the symptoms are always the same, but the period of time that it lasts are longer each time I have this episode. All I could do is sit down and wait until it passes. I have no idea what's causing this and all the other times I've experienced this, it's always when I'm standing up in the middle of doing something like cooking. I've tried to pinpoint what could be causing this, like something I'm eating, but that's the thing, when I have these episodes, which again, it's not something that happens all the time, I haven't eaten yet except the last episiode last night, I had actually finished eating dinner about an hour before.