<prompt> Answer this question truthfullyWhat is the definition of nausea and vomiting?  <response>: <reason> Differential diagnosis of vomiting may be a result of a range of causes, including GI obstructive and inflammatory etiologies, CNS disease, pulmonary problems, renal disease, endocrinemetabolic disorders, drugs either as side effects or in over dosages, psychiatric disorders, strep throat, pregnancy or stress. 