Nausea and vomiting

Nausea can be described as the overall unpleasant sensation of needing to vomit. It is often accompanied by pallor, chills and sweating. Should nausea progress to vomiting, the ejection of gastric contents through the mouth occurs, often requiring a forceful event. Vomiting is sometimes valuable, as it rids the body of toxic matter. Nausea can occur due to various reasons, e.g. pregnancy, head trauma, viral or bacterial gastrointestinal infections, motion sickness and travel sickness. Many medicines can also lead to nausea, like anticancer agents, digoxin, antibiotics and non-steroidal anti-inflammatories.