Abstract
Introduction : Chronic nausea and vomiting (CNV) are commonly encountered symptoms in medical practice. CNV is the presenting symptom in a variety of gastrointestinal and non-gastrointestinal disorders. However, in a significant percentage of patients without an obvious underlying cause, CNV poses a significant diagnostic challenge to the evaluating physician. Areas covered : A comprehensive clinical history and physical examination form the foundation for further diagnostic work-up. In the present review, we discuss the diagnostic approach to CNV, highlighting the epidemiology, pathophysiology, causes and modes of evaluation of this condition. Specific investigations, carefully guided by clinical assessment and tailored for each patient, would be more beneficial in diagnosing CNV than empirically performing a blanket of investigations. Expert opinion Whilst CNV remains a historically challenging diagnostic and therapeutic dilemma, research into this topic is limited. Hence there is a growing call for more research into diagnostic modalities for CNV. With scientific advancement and further research, it is hoped that easy to use, cheap, non-invasive novel diagnostic modalities for CNV will be available soon.
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