Definition

By Mayo Clinic Staff

Nausea and vomiting are common signs and symptoms that can be caused by numerous conditions. Nausea and vomiting most often are due to viral gastroenteritis — often called stomach flu — or the morning sickness of early pregnancy.

Many medications or substances can also cause nausea and vomiting, including marijuana (cannabis). Rarely, nausea and vomiting may indicate a serious or even life-threatening problem.

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July 10, 2026

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