Chapter 21 Ataxia, Dizziness, and Vertigo
ETIOLOGY
What Is Dizziness?
Dizziness is a nonspecific term that usually refers to a sense of lightheadedness and unsteadiness. It is often part of the presyncopal phenomenon (see Syncope, Chapter 39) but can be caused by dehydration, hypotension, anemia, or hypoglycemia. Dizziness should be distinguished from vertigo, ataxia, and weakness. Dizziness may be seen in some dysautonomias. Cardiac causes of dizziness include arrhythmias and postural orthostatic tachycardia syndrome.
EVALUATION
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