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Nausea is a feeling of queasiness and discomfort in your stomach often with the urge to vomit. Nausea is not a disease itself, but an indication that something is wrong. It is a symptom of a wide range of conditions or may be the result of an unhealthy action.
Nausea itself is usually harmless, however, it can be a symptom of a more serious issue. If your nausea is accompanied by a severe headache, severe stomach pain, difficulty breathing, a stiff neck, or confusion you should seek prompt medical attention. You should get medical help if you suspect you’ve ingested a poisonous substance or are severely dehydrated.