Recently I have been experiencing severe dizziness occurring at random. It started one year ago, I experienced it for one day back in July 2007 but i went away. But it lasts for about 12 hours, from start to finish. But i get so disoriented i can really do anything. About two hours in i am so dizzy I get nauseated and vomit. During this time my temperature is from 95.0 - 96.0 deg. After the symptoms subside. my temp return to normal (98.0). I have never has ANY problems with movement sickness, or anything. I'm kinda at a loss for this. Also - during the time when the dizziness occurs, my speech is not effected nor my memory or though process. Just completely disoriented and nauseated.