NAUSEA

Nausea is the sensation that there is a need to vomit. Nausea can be acute and short-lived, or it can be prolonged. When prolonged, it is a debilitating symptom. Nausea (and vomiting) can be psychological or physical in origin.

It can originate from problems in the brain or organs of the upper gastrointestinal tract (esophagus, stomach, small intestine, liver, pancreas, and gallbladder). It also may be caused by pain, motion, medications and diseases of many non-gastrointestinal organs of the body.
Therefore, the diagnosis of the cause of prolonged nausea may not be easy.
All stimuli that cause nausea work via the vomiting center in the brain which gives rise to the sensation of nausea and coordinates the physical act of vomiting.

If you suspect your nausea comes from chemical exposure, be sure to check the MSDS to see what other symptoms might also be reasonable to expect.
If the nausea continues for a long period of time or is accompanied by other symptoms, consult your physician.

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