question: My sister has been unable to function for a month now.. We thought it was vertigo. But I m concerned it is more serious. She is very dizzy.. Can t walk at times without help. Acts as if she is drunk. Slurred speech.. Gets confused.. Can t watch TV.. Any lights make her nauseous. She can wake up and feel ok.. A little dizzy.. But by 6 at night she is vomiting.. Very dizzy.. And can t walk without help. Don t know what to do.