A 32-year-old female asked:
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lab work all came back normal. what are some causes of becoming lightheaded? it can happen randomly but most often during exercise.

1 doctor answer
Dr. Dan Fisher
27 years experience Internal Medicine
Heart?: I would expect lab to be normal. I would be more concerned about your ekg, listening to your heart and in performing a cardiac echo and event monitor. Cardiac dysrhythmia of some sort may be your culprit. If not could be dehydration or anxiety.
Answered on Apr 6, 2013
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