What Are the Causes of Nausea & Lightheadedness?
Nausea is the sensation of discomfort that occurs before vomiting. Lightheadedness, or the feeling that you're going to faint, is sometimes associated with nausea. Because many conditions can trigger these symptoms, the cause of nausea and lightheadedness can only be determined by a doctor.
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Vertigo
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Vertigo is a condition involving intermittent bouts of nausea, dizziness and the illusion of movement. According to NeurologyChannel.com, vertigo is among the most common health complaints in adults and is slightly more prevalent in women.
Dehydration
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Dehydration is an absence of water in the body's cells. Although severe dehydration can be fatal, milder cases may cause symptoms such as nausea, fatigue and lightheadedness.
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Allergy
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Nausea and lightheadedness are among the most common symptoms of food allergy, according to MayoClinic.com. These symptoms may result from the body's attempt to remove substances it perceives as harmful and can signal anaphylaxis.
Motion Sickness
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Motion sickness is caused by a discrepancy between visually perceived motion and the vestibular system's perception of movement. Airplane, car, boat and roller coaster rides are common triggers for motion sickness.
Warning
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While generally harmless, persistent nausea and lightheadedness can sometimes signal a more serious condition. To avoid complications, talk to your doctor about your symptoms and treatment options.
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