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Vomiting is the forceful ejection of stomach contents.
It is often preceded by nausea or retching, dry heaves, or can occur without warning. Nausea and vomiting are controlled by the brain. It is the body s response to an intestinal irritant. Gastroenteritis is a term that describes a non-specific inflammation of the stomach and intestines. In healthy young adults, most cases are mild and will resolve within five days with supportive treatment.