Nausea is feeling an urge to vomit. It is often called "being sick to your stomach." Vomiting or throwing-up forces the contents of the stomach up through the food pipe (esophagus) and out of the mouth.Nausea is a sensation of discomfort in the upper abdomen, accompanied by an urge to vomit. Also known of as qualm, nausea may be a side effect associated with several medications or a symptom of disease or disorder. Sometimes large, fatty or sugary meals may also lead to a feeling of nausea.

During the vomiting process, muscles in the diaphragm, chest wall and abdomen begin to contract, forcing the stomach contents upward. While this occurs, the epiglottis closes to ensure that the stomach contents cannot enter the trachea or lungs (Queensland Health 2018). Nausea and vomiting are common symptoms that can occur due to a number of possible causes. Nausea is the feeling of being sick to your stomach, while vomiting is the forceful expulsion of stomach contents