question: Hi, for the second time this year , I experienced extreme dizziness, vomiting, diarrhea, shakes. I was unable to stand or move my head, open my eyes , without exacerbating the dizziness. Both episodes lasted about 5 hrs. the first one was chalked up to a virus after seeing my family physician. Could this second time be the same virus or is it more serious? It was an acute onset, no warning, no increasing of symptoms. All in all a very frightening experience. Please help .