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Definition of Lightheadedness

Lightheadedness: A feeling you are "going to faint." Lightheadedness is medically distinct from dizziness, unsteadiness, and vertigo. Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=6109
Last Editorial Review: 5/12/2014

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Medically reviewed by Martin Zipser, MD; Board Certified: Surgery


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