What Are the Causes of Unexplained Nausea?

According to a report from the Wake Forest University Baptist Medical Center, chronic unexplained nausea and dyspepsia symptoms affect about one in four people. Unexplained nausea can have many different causes, and should be evaluated by a doctor if it's ongoing.

Pregnancy

Unexplained nausea is an early indicator of pregnancy (known as morning sickness, though it occurs at any time). Typically, it begins around the sixth week and ends by the third month.

Medication

If you take any prescription or over-the-counter medication, check whether it can cause nausea as a side effect.

Infection

Many types of infections, particularly in the gastrointestinal tract, can cause unexplained nausea.

Food Poisoning

Nausea can result from eating food contaminated with bacteria. Usually this will be followed by vomiting and/or diarrhea.

Stress/Psychiatric Disorders

Stress, anxiety, depression and many mood disorders can manifest physically as unexplained nausea.

References

• Wake Forest University Baptist Medical Center
• American Pregnancy Association
• American College of Gastroenterology