sentence: Nausea is a symptom, rather than an illness or disease.
sentences_after: The causes for it very often are not in the stomach itself, but somewhere else in the body. Nausea is often caused by a stomach virus. Nausea is usually harmless, in the short term. Nausea can also occur during pregnancy, and is quite normal in that context.
concept_name: nausea
headings: Nausea
categories: Symptoms